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Finding the Fourth Proportional to 545.36, 817.28 and 271.10

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Solution

The fourth proportional to 545.36, 817.28 and 271.10 is: 406.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.36 : 817.28 = 271.10 : x
  2. Step 2: Convert to fraction form
    545.36/817.28 = 271.10/x
  3. Step 3: Cross multiply
    545.36x = 817.28 × 271.10
  4. Step 4: Simplify right side
    545.36x = 221,564.61
  5. Step 5: Solve for x
    x = 221,564.61/545.36
  6. Step 6: Final answer
    x = 406.27

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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.