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Finding the Fourth Proportional to 545.03, 816.26 and 414.88

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Solution

The fourth proportional to 545.03, 816.26 and 414.88 is: 621.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.03 : 816.26 = 414.88 : x
  2. Step 2: Convert to fraction form
    545.03/816.26 = 414.88/x
  3. Step 3: Cross multiply
    545.03x = 816.26 × 414.88
  4. Step 4: Simplify right side
    545.03x = 338,648.17
  5. Step 5: Solve for x
    x = 338,648.17/545.03
  6. Step 6: Final answer
    x = 621.33

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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.