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Finding the Fourth Proportional to 545.19, 752.36 and 324.17

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Solution

The fourth proportional to 545.19, 752.36 and 324.17 is: 447.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.19 : 752.36 = 324.17 : x
  2. Step 2: Convert to fraction form
    545.19/752.36 = 324.17/x
  3. Step 3: Cross multiply
    545.19x = 752.36 × 324.17
  4. Step 4: Simplify right side
    545.19x = 243,892.54
  5. Step 5: Solve for x
    x = 243,892.54/545.19
  6. Step 6: Final answer
    x = 447.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.