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Finding the Fourth Proportional to 151.47, 207.20 and 150.86

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Solution

The fourth proportional to 151.47, 207.20 and 150.86 is: 206.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.47 : 207.20 = 150.86 : x
  2. Step 2: Convert to fraction form
    151.47/207.20 = 150.86/x
  3. Step 3: Cross multiply
    151.47x = 207.20 × 150.86
  4. Step 4: Simplify right side
    151.47x = 31,258.19
  5. Step 5: Solve for x
    x = 31,258.19/151.47
  6. Step 6: Final answer
    x = 206.37

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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.