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Finding the Fourth Proportional to 545.38, 752.63 and 296.71

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Solution

The fourth proportional to 545.38, 752.63 and 296.71 is: 409.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.38 : 752.63 = 296.71 : x
  2. Step 2: Convert to fraction form
    545.38/752.63 = 296.71/x
  3. Step 3: Cross multiply
    545.38x = 752.63 × 296.71
  4. Step 4: Simplify right side
    545.38x = 223,307.60
  5. Step 5: Solve for x
    x = 223,307.60/545.38
  6. Step 6: Final answer
    x = 409.46

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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.