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Finding the Fourth Proportional to 545.36, 814.10 and 480.72

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Solution

The fourth proportional to 545.36, 814.10 and 480.72 is: 717.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.36 : 814.10 = 480.72 : x
  2. Step 2: Convert to fraction form
    545.36/814.10 = 480.72/x
  3. Step 3: Cross multiply
    545.36x = 814.10 × 480.72
  4. Step 4: Simplify right side
    545.36x = 391,354.15
  5. Step 5: Solve for x
    x = 391,354.15/545.36
  6. Step 6: Final answer
    x = 717.61

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.