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Finding the Fourth Proportional to 552.60, 762.19 and 355.92

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Solution

The fourth proportional to 552.60, 762.19 and 355.92 is: 490.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.60 : 762.19 = 355.92 : x
  2. Step 2: Convert to fraction form
    552.60/762.19 = 355.92/x
  3. Step 3: Cross multiply
    552.60x = 762.19 × 355.92
  4. Step 4: Simplify right side
    552.60x = 271,281.21
  5. Step 5: Solve for x
    x = 271,281.21/552.60
  6. Step 6: Final answer
    x = 490.92

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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.