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Finding the Fourth Proportional to 545.06, 752.15 and 323.89

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Solution

The fourth proportional to 545.06, 752.15 and 323.89 is: 446.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.06 : 752.15 = 323.89 : x
  2. Step 2: Convert to fraction form
    545.06/752.15 = 323.89/x
  3. Step 3: Cross multiply
    545.06x = 752.15 × 323.89
  4. Step 4: Simplify right side
    545.06x = 243,612.79
  5. Step 5: Solve for x
    x = 243,612.79/545.06
  6. Step 6: Final answer
    x = 446.94

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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.