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Finding the Fourth Proportional to 60.29, 90.32 and 39.69

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Solution

The fourth proportional to 60.29, 90.32 and 39.69 is: 59.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.29 : 90.32 = 39.69 : x
  2. Step 2: Convert to fraction form
    60.29/90.32 = 39.69/x
  3. Step 3: Cross multiply
    60.29x = 90.32 × 39.69
  4. Step 4: Simplify right side
    60.29x = 3,584.60
  5. Step 5: Solve for x
    x = 3,584.60/60.29
  6. Step 6: Final answer
    x = 59.45

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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.