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Finding the Fourth Proportional to 566.42, 781.17 and 356.36

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Solution

The fourth proportional to 566.42, 781.17 and 356.36 is: 491.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    566.42 : 781.17 = 356.36 : x
  2. Step 2: Convert to fraction form
    566.42/781.17 = 356.36/x
  3. Step 3: Cross multiply
    566.42x = 781.17 × 356.36
  4. Step 4: Simplify right side
    566.42x = 278,377.74
  5. Step 5: Solve for x
    x = 278,377.74/566.42
  6. Step 6: Final answer
    x = 491.47

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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.