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Finding the Fourth Proportional to 691.48, 951.80 and 604

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Solution

The fourth proportional to 691.48, 951.80 and 604 is: 831.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    691.48 : 951.80 = 604 : x
  2. Step 2: Convert to fraction form
    691.48/951.80 = 604/x
  3. Step 3: Cross multiply
    691.48x = 951.80 × 604
  4. Step 4: Simplify right side
    691.48x = 574,887.20
  5. Step 5: Solve for x
    x = 574,887.20/691.48
  6. Step 6: Final answer
    x = 831.39

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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.