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Finding the Fourth Proportional to 716.61, 1,074.48 and 635.61

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Solution

The fourth proportional to 716.61, 1,074.48 and 635.61 is: 953.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    716.61 : 1,074.48 = 635.61 : x
  2. Step 2: Convert to fraction form
    716.61/1,074.48 = 635.61/x
  3. Step 3: Cross multiply
    716.61x = 1,074.48 × 635.61
  4. Step 4: Simplify right side
    716.61x = 682,950.23
  5. Step 5: Solve for x
    x = 682,950.23/716.61
  6. Step 6: Final answer
    x = 953.03

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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.