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Finding the Fourth Proportional to 363.24, 545.10 and 347.40

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Solution

The fourth proportional to 363.24, 545.10 and 347.40 is: 521.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    363.24 : 545.10 = 347.40 : x
  2. Step 2: Convert to fraction form
    363.24/545.10 = 347.40/x
  3. Step 3: Cross multiply
    363.24x = 545.10 × 347.40
  4. Step 4: Simplify right side
    363.24x = 189,367.74
  5. Step 5: Solve for x
    x = 189,367.74/363.24
  6. Step 6: Final answer
    x = 521.33

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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.