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Finding the Fourth Proportional to 372.71, 556.38 and 324.11

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Solution

The fourth proportional to 372.71, 556.38 and 324.11 is: 483.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.71 : 556.38 = 324.11 : x
  2. Step 2: Convert to fraction form
    372.71/556.38 = 324.11/x
  3. Step 3: Cross multiply
    372.71x = 556.38 × 324.11
  4. Step 4: Simplify right side
    372.71x = 180,325.54
  5. Step 5: Solve for x
    x = 180,325.54/372.71
  6. Step 6: Final answer
    x = 483.83

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.