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Finding the Fourth Proportional to 39.93, 60.24 and 38.67

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Solution

The fourth proportional to 39.93, 60.24 and 38.67 is: 58.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39.93 : 60.24 = 38.67 : x
  2. Step 2: Convert to fraction form
    39.93/60.24 = 38.67/x
  3. Step 3: Cross multiply
    39.93x = 60.24 × 38.67
  4. Step 4: Simplify right side
    39.93x = 2,329.48
  5. Step 5: Solve for x
    x = 2,329.48/39.93
  6. Step 6: Final answer
    x = 58.34

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.