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Finding the Fourth Proportional to 545.13, 752.28 and 296.45

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Solution

The fourth proportional to 545.13, 752.28 and 296.45 is: 409.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.13 : 752.28 = 296.45 : x
  2. Step 2: Convert to fraction form
    545.13/752.28 = 296.45/x
  3. Step 3: Cross multiply
    545.13x = 752.28 × 296.45
  4. Step 4: Simplify right side
    545.13x = 223,013.41
  5. Step 5: Solve for x
    x = 223,013.41/545.13
  6. Step 6: Final answer
    x = 409.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.