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Finding the Fourth Proportional to 552.18, 762.04 and 319.32

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Solution

The fourth proportional to 552.18, 762.04 and 319.32 is: 440.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.18 : 762.04 = 319.32 : x
  2. Step 2: Convert to fraction form
    552.18/762.04 = 319.32/x
  3. Step 3: Cross multiply
    552.18x = 762.04 × 319.32
  4. Step 4: Simplify right side
    552.18x = 243,334.61
  5. Step 5: Solve for x
    x = 243,334.61/552.18
  6. Step 6: Final answer
    x = 440.68

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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.