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Finding the Fourth Proportional to 151.30, 225.51 and 146.90

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Solution

The fourth proportional to 151.30, 225.51 and 146.90 is: 218.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.30 : 225.51 = 146.90 : x
  2. Step 2: Convert to fraction form
    151.30/225.51 = 146.90/x
  3. Step 3: Cross multiply
    151.30x = 225.51 × 146.90
  4. Step 4: Simplify right side
    151.30x = 33,126.68
  5. Step 5: Solve for x
    x = 33,126.68/151.30
  6. Step 6: Final answer
    x = 218.95

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.