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Finding the Fourth Proportional to 1,207.37, 1,666.09 and 676.19

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Solution

The fourth proportional to 1,207.37, 1,666.09 and 676.19 is: 933.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207.37 : 1,666.09 = 676.19 : x
  2. Step 2: Convert to fraction form
    1,207.37/1,666.09 = 676.19/x
  3. Step 3: Cross multiply
    1,207.37x = 1,666.09 × 676.19
  4. Step 4: Simplify right side
    1,207.37x = 1,126,593.40
  5. Step 5: Solve for x
    x = 1,126,593.40/1,207.37
  6. Step 6: Final answer
    x = 933.10

Related Problems

Find fourth proportional to 603.69, 833.05 and 338.10
Half scale
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Double scale
Find fourth proportional to 1,208.37, 1,667.47 and 677.19
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.