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Finding the Fourth Proportional to 545.08, 817.38 and 329.08

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Solution

The fourth proportional to 545.08, 817.38 and 329.08 is: 493.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.08 : 817.38 = 329.08 : x
  2. Step 2: Convert to fraction form
    545.08/817.38 = 329.08/x
  3. Step 3: Cross multiply
    545.08x = 817.38 × 329.08
  4. Step 4: Simplify right side
    545.08x = 268,983.41
  5. Step 5: Solve for x
    x = 268,983.41/545.08
  6. Step 6: Final answer
    x = 493.48

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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.