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Finding the Fourth Proportional to 552.68, 827.88 and 320.88

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Solution

The fourth proportional to 552.68, 827.88 and 320.88 is: 480.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.68 : 827.88 = 320.88 : x
  2. Step 2: Convert to fraction form
    552.68/827.88 = 320.88/x
  3. Step 3: Cross multiply
    552.68x = 827.88 × 320.88
  4. Step 4: Simplify right side
    552.68x = 265,650.13
  5. Step 5: Solve for x
    x = 265,650.13/552.68
  6. Step 6: Final answer
    x = 480.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.