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Finding the Fourth Proportional to 317.25, 475.88 and 124.88

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Solution

The fourth proportional to 317.25, 475.88 and 124.88 is: 187.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.25 : 475.88 = 124.88 : x
  2. Step 2: Convert to fraction form
    317.25/475.88 = 124.88/x
  3. Step 3: Cross multiply
    317.25x = 475.88 × 124.88
  4. Step 4: Simplify right side
    317.25x = 59,424.89
  5. Step 5: Solve for x
    x = 59,424.89/317.25
  6. Step 6: Final answer
    x = 187.31

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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.