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Finding the Fourth Proportional to 732.34, 1,008.35 and 691.74

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Solution

The fourth proportional to 732.34, 1,008.35 and 691.74 is: 952.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    732.34 : 1,008.35 = 691.74 : x
  2. Step 2: Convert to fraction form
    732.34/1,008.35 = 691.74/x
  3. Step 3: Cross multiply
    732.34x = 1,008.35 × 691.74
  4. Step 4: Simplify right side
    732.34x = 697,515.16
  5. Step 5: Solve for x
    x = 697,515.16/732.34
  6. Step 6: Final answer
    x = 952.45

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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.