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Finding the Fourth Proportional to 325.11, 487.58 and 151.61

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Solution

The fourth proportional to 325.11, 487.58 and 151.61 is: 227.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.11 : 487.58 = 151.61 : x
  2. Step 2: Convert to fraction form
    325.11/487.58 = 151.61/x
  3. Step 3: Cross multiply
    325.11x = 487.58 × 151.61
  4. Step 4: Simplify right side
    325.11x = 73,918.81
  5. Step 5: Solve for x
    x = 73,918.81/325.11
  6. Step 6: Final answer
    x = 227.37

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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.