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Finding the Fourth Proportional to 150.11, 207.17 and 91.11

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Solution

The fourth proportional to 150.11, 207.17 and 91.11 is: 125.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    150.11 : 207.17 = 91.11 : x
  2. Step 2: Convert to fraction form
    150.11/207.17 = 91.11/x
  3. Step 3: Cross multiply
    150.11x = 207.17 × 91.11
  4. Step 4: Simplify right side
    150.11x = 18,875.26
  5. Step 5: Solve for x
    x = 18,875.26/150.11
  6. Step 6: Final answer
    x = 125.74

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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.