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Finding the Fourth Proportional to 718.11, 1,076.12 and 352.48

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Solution

The fourth proportional to 718.11, 1,076.12 and 352.48 is: 528.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    718.11 : 1,076.12 = 352.48 : x
  2. Step 2: Convert to fraction form
    718.11/1,076.12 = 352.48/x
  3. Step 3: Cross multiply
    718.11x = 1,076.12 × 352.48
  4. Step 4: Simplify right side
    718.11x = 379,310.78
  5. Step 5: Solve for x
    x = 379,310.78/718.11
  6. Step 6: Final answer
    x = 528.21

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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.