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Finding the Fourth Proportional to 151.85, 208.13 and 147.23

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Solution

The fourth proportional to 151.85, 208.13 and 147.23 is: 201.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.85 : 208.13 = 147.23 : x
  2. Step 2: Convert to fraction form
    151.85/208.13 = 147.23/x
  3. Step 3: Cross multiply
    151.85x = 208.13 × 147.23
  4. Step 4: Simplify right side
    151.85x = 30,641.20
  5. Step 5: Solve for x
    x = 30,641.20/151.85
  6. Step 6: Final answer
    x = 201.79

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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.