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Finding the Fourth Proportional to 545.03, 817.56 and 220.18

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Solution

The fourth proportional to 545.03, 817.56 and 220.18 is: 330.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.03 : 817.56 = 220.18 : x
  2. Step 2: Convert to fraction form
    545.03/817.56 = 220.18/x
  3. Step 3: Cross multiply
    545.03x = 817.56 × 220.18
  4. Step 4: Simplify right side
    545.03x = 180,008.32
  5. Step 5: Solve for x
    x = 180,008.32/545.03
  6. Step 6: Final answer
    x = 330.27

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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.