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Finding the Fourth Proportional to 552.98, 829.54 and 260.78

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Solution

The fourth proportional to 552.98, 829.54 and 260.78 is: 391.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.98 : 829.54 = 260.78 : x
  2. Step 2: Convert to fraction form
    552.98/829.54 = 260.78/x
  3. Step 3: Cross multiply
    552.98x = 829.54 × 260.78
  4. Step 4: Simplify right side
    552.98x = 216,327.44
  5. Step 5: Solve for x
    x = 216,327.44/552.98
  6. Step 6: Final answer
    x = 391.20

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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.