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Finding the Fourth Proportional to 325.10, 487.17 and 162.45

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Solution

The fourth proportional to 325.10, 487.17 and 162.45 is: 243.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.10 : 487.17 = 162.45 : x
  2. Step 2: Convert to fraction form
    325.10/487.17 = 162.45/x
  3. Step 3: Cross multiply
    325.10x = 487.17 × 162.45
  4. Step 4: Simplify right side
    325.10x = 79,140.77
  5. Step 5: Solve for x
    x = 79,140.77/325.10
  6. Step 6: Final answer
    x = 243.44

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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.