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Finding the Fourth Proportional to 101.77, 151.43 and 101.42

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Solution

The fourth proportional to 101.77, 151.43 and 101.42 is: 150.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    101.77 : 151.43 = 101.42 : x
  2. Step 2: Convert to fraction form
    101.77/151.43 = 101.42/x
  3. Step 3: Cross multiply
    101.77x = 151.43 × 101.42
  4. Step 4: Simplify right side
    101.77x = 15,358.52
  5. Step 5: Solve for x
    x = 15,358.52/101.77
  6. Step 6: Final answer
    x = 150.92

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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.