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Finding the Fourth Proportional to 60.32, 83.21 and 45.81

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Solution

The fourth proportional to 60.32, 83.21 and 45.81 is: 63.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.32 : 83.21 = 45.81 : x
  2. Step 2: Convert to fraction form
    60.32/83.21 = 45.81/x
  3. Step 3: Cross multiply
    60.32x = 83.21 × 45.81
  4. Step 4: Simplify right side
    60.32x = 3,811.62
  5. Step 5: Solve for x
    x = 3,811.62/60.32
  6. Step 6: Final answer
    x = 63.20

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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.