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Finding the Fourth Proportional to 317.31, 472.98 and 296.79

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Solution

The fourth proportional to 317.31, 472.98 and 296.79 is: 442.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.31 : 472.98 = 296.79 : x
  2. Step 2: Convert to fraction form
    317.31/472.98 = 296.79/x
  3. Step 3: Cross multiply
    317.31x = 472.98 × 296.79
  4. Step 4: Simplify right side
    317.31x = 140,375.73
  5. Step 5: Solve for x
    x = 140,375.73/317.31
  6. Step 6: Final answer
    x = 442.39

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.