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Finding the Fourth Proportional to 545.51, 753.03 and 324.47

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Solution

The fourth proportional to 545.51, 753.03 and 324.47 is: 447.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.51 : 753.03 = 324.47 : x
  2. Step 2: Convert to fraction form
    545.51/753.03 = 324.47/x
  3. Step 3: Cross multiply
    545.51x = 753.03 × 324.47
  4. Step 4: Simplify right side
    545.51x = 244,331.88
  5. Step 5: Solve for x
    x = 244,331.88/545.51
  6. Step 6: Final answer
    x = 447.90

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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.