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Finding the Fourth Proportional to 124.82, 187.24 and 39.32

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Solution

The fourth proportional to 124.82, 187.24 and 39.32 is: 58.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.82 : 187.24 = 39.32 : x
  2. Step 2: Convert to fraction form
    124.82/187.24 = 39.32/x
  3. Step 3: Cross multiply
    124.82x = 187.24 × 39.32
  4. Step 4: Simplify right side
    124.82x = 7,362.28
  5. Step 5: Solve for x
    x = 7,362.28/124.82
  6. Step 6: Final answer
    x = 58.98

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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.