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Finding the Fourth Proportional to 146.71, 220.01 and 74.53

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Solution

The fourth proportional to 146.71, 220.01 and 74.53 is: 111.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.71 : 220.01 = 74.53 : x
  2. Step 2: Convert to fraction form
    146.71/220.01 = 74.53/x
  3. Step 3: Cross multiply
    146.71x = 220.01 × 74.53
  4. Step 4: Simplify right side
    146.71x = 16,396.97
  5. Step 5: Solve for x
    x = 16,396.97/146.71
  6. Step 6: Final answer
    x = 111.76

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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.