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Finding the Fourth Proportional to 317.13, 475.98 and 154.95

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Solution

The fourth proportional to 317.13, 475.98 and 154.95 is: 232.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.13 : 475.98 = 154.95 : x
  2. Step 2: Convert to fraction form
    317.13/475.98 = 154.95/x
  3. Step 3: Cross multiply
    317.13x = 475.98 × 154.95
  4. Step 4: Simplify right side
    317.13x = 73,753.10
  5. Step 5: Solve for x
    x = 73,753.10/317.13
  6. Step 6: Final answer
    x = 232.56

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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.