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Finding the Fourth Proportional to 545.25, 817.37 and 271.08

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Solution

The fourth proportional to 545.25, 817.37 and 271.08 is: 406.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.25 : 817.37 = 271.08 : x
  2. Step 2: Convert to fraction form
    545.25/817.37 = 271.08/x
  3. Step 3: Cross multiply
    545.25x = 817.37 × 271.08
  4. Step 4: Simplify right side
    545.25x = 221,572.32
  5. Step 5: Solve for x
    x = 221,572.32/545.25
  6. Step 6: Final answer
    x = 406.37

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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.