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Finding the Fourth Proportional to 60.32, 90.57 and 31.46

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Solution

The fourth proportional to 60.32, 90.57 and 31.46 is: 47.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.32 : 90.57 = 31.46 : x
  2. Step 2: Convert to fraction form
    60.32/90.57 = 31.46/x
  3. Step 3: Cross multiply
    60.32x = 90.57 × 31.46
  4. Step 4: Simplify right side
    60.32x = 2,849.33
  5. Step 5: Solve for x
    x = 2,849.33/60.32
  6. Step 6: Final answer
    x = 47.24

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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.