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Finding the Fourth Proportional to 146.01, 218.90 and 115.71

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Solution

The fourth proportional to 146.01, 218.90 and 115.71 is: 173.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.01 : 218.90 = 115.71 : x
  2. Step 2: Convert to fraction form
    146.01/218.90 = 115.71/x
  3. Step 3: Cross multiply
    146.01x = 218.90 × 115.71
  4. Step 4: Simplify right side
    146.01x = 25,328.34
  5. Step 5: Solve for x
    x = 25,328.34/146.01
  6. Step 6: Final answer
    x = 173.47

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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.