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Finding the Fourth Proportional to 552.78, 829.32 and 264.18

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Solution

The fourth proportional to 552.78, 829.32 and 264.18 is: 396.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.78 : 829.32 = 264.18 : x
  2. Step 2: Convert to fraction form
    552.78/829.32 = 264.18/x
  3. Step 3: Cross multiply
    552.78x = 829.32 × 264.18
  4. Step 4: Simplify right side
    552.78x = 219,089.76
  5. Step 5: Solve for x
    x = 219,089.76/552.78
  6. Step 6: Final answer
    x = 396.34

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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.