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Finding the Fourth Proportional to 325.14, 487.72 and 162.74

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Solution

The fourth proportional to 325.14, 487.72 and 162.74 is: 244.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.14 : 487.72 = 162.74 : x
  2. Step 2: Convert to fraction form
    325.14/487.72 = 162.74/x
  3. Step 3: Cross multiply
    325.14x = 487.72 × 162.74
  4. Step 4: Simplify right side
    325.14x = 79,371.55
  5. Step 5: Solve for x
    x = 79,371.55/325.14
  6. Step 6: Final answer
    x = 244.12

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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.