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Finding the Fourth Proportional to 545.30, 752.47 and 324.32

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Solution

The fourth proportional to 545.30, 752.47 and 324.32 is: 447.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.30 : 752.47 = 324.32 : x
  2. Step 2: Convert to fraction form
    545.30/752.47 = 324.32/x
  3. Step 3: Cross multiply
    545.30x = 752.47 × 324.32
  4. Step 4: Simplify right side
    545.30x = 244,042.14
  5. Step 5: Solve for x
    x = 244,042.14/545.30
  6. Step 6: Final answer
    x = 447.54

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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.