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Finding the Fourth Proportional to 1,193.12, 1,646.46 and 669.14

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Solution

The fourth proportional to 1,193.12, 1,646.46 and 669.14 is: 923.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,193.12 : 1,646.46 = 669.14 : x
  2. Step 2: Convert to fraction form
    1,193.12/1,646.46 = 669.14/x
  3. Step 3: Cross multiply
    1,193.12x = 1,646.46 × 669.14
  4. Step 4: Simplify right side
    1,193.12x = 1,101,712.24
  5. Step 5: Solve for x
    x = 1,101,712.24/1,193.12
  6. Step 6: Final answer
    x = 923.39

Related Problems

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Half scale
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Double scale
Find fourth proportional to 1,194.12, 1,647.84 and 670.14
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.