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Finding the Fourth Proportional to 545.08, 752.21 and 296.39

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Solution

The fourth proportional to 545.08, 752.21 and 296.39 is: 409.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.08 : 752.21 = 296.39 : x
  2. Step 2: Convert to fraction form
    545.08/752.21 = 296.39/x
  3. Step 3: Cross multiply
    545.08x = 752.21 × 296.39
  4. Step 4: Simplify right side
    545.08x = 222,947.92
  5. Step 5: Solve for x
    x = 222,947.92/545.08
  6. Step 6: Final answer
    x = 409.02

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1.5x scale

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.