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Finding the Fourth Proportional to 545.79, 753.17 and 297.09

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Solution

The fourth proportional to 545.79, 753.17 and 297.09 is: 409.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.79 : 753.17 = 297.09 : x
  2. Step 2: Convert to fraction form
    545.79/753.17 = 297.09/x
  3. Step 3: Cross multiply
    545.79x = 753.17 × 297.09
  4. Step 4: Simplify right side
    545.79x = 223,757.79
  5. Step 5: Solve for x
    x = 223,757.79/545.79
  6. Step 6: Final answer
    x = 409.97

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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.