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Finding the Fourth Proportional to 151.22, 207.54 and 147.17

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Solution

The fourth proportional to 151.22, 207.54 and 147.17 is: 201.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.22 : 207.54 = 147.17 : x
  2. Step 2: Convert to fraction form
    151.22/207.54 = 147.17/x
  3. Step 3: Cross multiply
    151.22x = 207.54 × 147.17
  4. Step 4: Simplify right side
    151.22x = 30,543.66
  5. Step 5: Solve for x
    x = 30,543.66/151.22
  6. Step 6: Final answer
    x = 201.98

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.