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Finding the Fourth Proportional to 317.56, 476.40 and 101.16

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Solution

The fourth proportional to 317.56, 476.40 and 101.16 is: 151.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.56 : 476.40 = 101.16 : x
  2. Step 2: Convert to fraction form
    317.56/476.40 = 101.16/x
  3. Step 3: Cross multiply
    317.56x = 476.40 × 101.16
  4. Step 4: Simplify right side
    317.56x = 48,192.62
  5. Step 5: Solve for x
    x = 48,192.62/317.56
  6. Step 6: Final answer
    x = 151.76

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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.