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Finding the Fourth Proportional to 60.16, 90.22 and 38.76

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Solution

The fourth proportional to 60.16, 90.22 and 38.76 is: 58.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.16 : 90.22 = 38.76 : x
  2. Step 2: Convert to fraction form
    60.16/90.22 = 38.76/x
  3. Step 3: Cross multiply
    60.16x = 90.22 × 38.76
  4. Step 4: Simplify right side
    60.16x = 3,496.93
  5. Step 5: Solve for x
    x = 3,496.93/60.16
  6. Step 6: Final answer
    x = 58.13

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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.