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Finding the Fourth Proportional to 552, 822.48 and 518.88

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Solution

The fourth proportional to 552, 822.48 and 518.88 is: 773.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    552 : 822.48 = 518.88 : x
  2. Step 2: Convert to fraction form
    552/822.48 = 518.88/x
  3. Step 3: Cross multiply
    552x = 822.48 × 518.88
  4. Step 4: Simplify right side
    552x = 426,768.42
  5. Step 5: Solve for x
    x = 426,768.42/552
  6. Step 6: Final answer
    x = 773.13

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.