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Finding the Fourth Proportional to 738.11, 1,112.48 and 636.62

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Solution

The fourth proportional to 738.11, 1,112.48 and 636.62 is: 959.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    738.11 : 1,112.48 = 636.62 : x
  2. Step 2: Convert to fraction form
    738.11/1,112.48 = 636.62/x
  3. Step 3: Cross multiply
    738.11x = 1,112.48 × 636.62
  4. Step 4: Simplify right side
    738.11x = 708,227.02
  5. Step 5: Solve for x
    x = 708,227.02/738.11
  6. Step 6: Final answer
    x = 959.51

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.