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Finding the Fourth Proportional to 1,173.77, 1,619.67 and 676.43

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Solution

The fourth proportional to 1,173.77, 1,619.67 and 676.43 is: 933.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,173.77 : 1,619.67 = 676.43 : x
  2. Step 2: Convert to fraction form
    1,173.77/1,619.67 = 676.43/x
  3. Step 3: Cross multiply
    1,173.77x = 1,619.67 × 676.43
  4. Step 4: Simplify right side
    1,173.77x = 1,095,593.38
  5. Step 5: Solve for x
    x = 1,095,593.38/1,173.77
  6. Step 6: Final answer
    x = 933.40

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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.