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Finding the Fourth Proportional to 545.54, 818.48 and 326.13

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Solution

The fourth proportional to 545.54, 818.48 and 326.13 is: 489.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.54 : 818.48 = 326.13 : x
  2. Step 2: Convert to fraction form
    545.54/818.48 = 326.13/x
  3. Step 3: Cross multiply
    545.54x = 818.48 × 326.13
  4. Step 4: Simplify right side
    545.54x = 266,927.71
  5. Step 5: Solve for x
    x = 266,927.71/545.54
  6. Step 6: Final answer
    x = 489.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.