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Finding the Fourth Proportional to 151.64, 209.13 and 150.87

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Solution

The fourth proportional to 151.64, 209.13 and 150.87 is: 208.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.64 : 209.13 = 150.87 : x
  2. Step 2: Convert to fraction form
    151.64/209.13 = 150.87/x
  3. Step 3: Cross multiply
    151.64x = 209.13 × 150.87
  4. Step 4: Simplify right side
    151.64x = 31,551.44
  5. Step 5: Solve for x
    x = 31,551.44/151.64
  6. Step 6: Final answer
    x = 208.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.