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Finding the Fourth Proportional to 545.10, 752.51 and 358.71

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Solution

The fourth proportional to 545.10, 752.51 and 358.71 is: 495.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.10 : 752.51 = 358.71 : x
  2. Step 2: Convert to fraction form
    545.10/752.51 = 358.71/x
  3. Step 3: Cross multiply
    545.10x = 752.51 × 358.71
  4. Step 4: Simplify right side
    545.10x = 269,932.86
  5. Step 5: Solve for x
    x = 269,932.86/545.10
  6. Step 6: Final answer
    x = 495.20

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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.