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Finding the Fourth Proportional to 545.05, 751.91 and 323.87

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Solution

The fourth proportional to 545.05, 751.91 and 323.87 is: 446.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.05 : 751.91 = 323.87 : x
  2. Step 2: Convert to fraction form
    545.05/751.91 = 323.87/x
  3. Step 3: Cross multiply
    545.05x = 751.91 × 323.87
  4. Step 4: Simplify right side
    545.05x = 243,519.47
  5. Step 5: Solve for x
    x = 243,519.47/545.05
  6. Step 6: Final answer
    x = 446.79

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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.