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Finding the Fourth Proportional to 151.75, 227.70 and 60.45

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Solution

The fourth proportional to 151.75, 227.70 and 60.45 is: 90.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.75 : 227.70 = 60.45 : x
  2. Step 2: Convert to fraction form
    151.75/227.70 = 60.45/x
  3. Step 3: Cross multiply
    151.75x = 227.70 × 60.45
  4. Step 4: Simplify right side
    151.75x = 13,763.61
  5. Step 5: Solve for x
    x = 13,763.61/151.75
  6. Step 6: Final answer
    x = 90.70

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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.