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Finding the Fourth Proportional to 545.31, 752.31 and 324.18

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Solution

The fourth proportional to 545.31, 752.31 and 324.18 is: 447.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.31 : 752.31 = 324.18 : x
  2. Step 2: Convert to fraction form
    545.31/752.31 = 324.18/x
  3. Step 3: Cross multiply
    545.31x = 752.31 × 324.18
  4. Step 4: Simplify right side
    545.31x = 243,883.86
  5. Step 5: Solve for x
    x = 243,883.86/545.31
  6. Step 6: Final answer
    x = 447.24

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