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Finding the Fourth Proportional to 552.95, 763.02 and 316.85

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Solution

The fourth proportional to 552.95, 763.02 and 316.85 is: 437.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.95 : 763.02 = 316.85 : x
  2. Step 2: Convert to fraction form
    552.95/763.02 = 316.85/x
  3. Step 3: Cross multiply
    552.95x = 763.02 × 316.85
  4. Step 4: Simplify right side
    552.95x = 241,762.89
  5. Step 5: Solve for x
    x = 241,762.89/552.95
  6. Step 6: Final answer
    x = 437.22

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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.