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Finding the Fourth Proportional to 552.91, 763.13 and 328.84

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Solution

The fourth proportional to 552.91, 763.13 and 328.84 is: 453.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.91 : 763.13 = 328.84 : x
  2. Step 2: Convert to fraction form
    552.91/763.13 = 328.84/x
  3. Step 3: Cross multiply
    552.91x = 763.13 × 328.84
  4. Step 4: Simplify right side
    552.91x = 250,947.67
  5. Step 5: Solve for x
    x = 250,947.67/552.91
  6. Step 6: Final answer
    x = 453.87

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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.