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Finding the Fourth Proportional to 151.41, 227.15 and 70.28

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Solution

The fourth proportional to 151.41, 227.15 and 70.28 is: 105.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.41 : 227.15 = 70.28 : x
  2. Step 2: Convert to fraction form
    151.41/227.15 = 70.28/x
  3. Step 3: Cross multiply
    151.41x = 227.15 × 70.28
  4. Step 4: Simplify right side
    151.41x = 15,964.10
  5. Step 5: Solve for x
    x = 15,964.10/151.41
  6. Step 6: Final answer
    x = 105.44

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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.