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Finding the Fourth Proportional to 281.47, 422.25 and 151.51

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Solution

The fourth proportional to 281.47, 422.25 and 151.51 is: 227.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    281.47 : 422.25 = 151.51 : x
  2. Step 2: Convert to fraction form
    281.47/422.25 = 151.51/x
  3. Step 3: Cross multiply
    281.47x = 422.25 × 151.51
  4. Step 4: Simplify right side
    281.47x = 63,975.10
  5. Step 5: Solve for x
    x = 63,975.10/281.47
  6. Step 6: Final answer
    x = 227.29

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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.