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Finding the Fourth Proportional to 60.23, 83.12 and 39.47

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Solution

The fourth proportional to 60.23, 83.12 and 39.47 is: 54.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.23 : 83.12 = 39.47 : x
  2. Step 2: Convert to fraction form
    60.23/83.12 = 39.47/x
  3. Step 3: Cross multiply
    60.23x = 83.12 × 39.47
  4. Step 4: Simplify right side
    60.23x = 3,280.33
  5. Step 5: Solve for x
    x = 3,280.33/60.23
  6. Step 6: Final answer
    x = 54.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.