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Finding the Fourth Proportional to 151.11, 226.65 and 59.78

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Solution

The fourth proportional to 151.11, 226.65 and 59.78 is: 89.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.11 : 226.65 = 59.78 : x
  2. Step 2: Convert to fraction form
    151.11/226.65 = 59.78/x
  3. Step 3: Cross multiply
    151.11x = 226.65 × 59.78
  4. Step 4: Simplify right side
    151.11x = 13,549.70
  5. Step 5: Solve for x
    x = 13,549.70/151.11
  6. Step 6: Final answer
    x = 89.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.