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Finding the Fourth Proportional to 552.23, 762.11 and 316.25

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Solution

The fourth proportional to 552.23, 762.11 and 316.25 is: 436.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.23 : 762.11 = 316.25 : x
  2. Step 2: Convert to fraction form
    552.23/762.11 = 316.25/x
  3. Step 3: Cross multiply
    552.23x = 762.11 × 316.25
  4. Step 4: Simplify right side
    552.23x = 241,015.94
  5. Step 5: Solve for x
    x = 241,015.94/552.23
  6. Step 6: Final answer
    x = 436.44

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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.