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Finding the Fourth Proportional to 710.97, 1,066.60 and 402.96

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Solution

The fourth proportional to 710.97, 1,066.60 and 402.96 is: 604.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.97 : 1,066.60 = 402.96 : x
  2. Step 2: Convert to fraction form
    710.97/1,066.60 = 402.96/x
  3. Step 3: Cross multiply
    710.97x = 1,066.60 × 402.96
  4. Step 4: Simplify right side
    710.97x = 429,797.14
  5. Step 5: Solve for x
    x = 429,797.14/710.97
  6. Step 6: Final answer
    x = 604.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.