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Finding the Fourth Proportional to 716.25, 1,074.84 and 551.88

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Solution

The fourth proportional to 716.25, 1,074.84 and 551.88 is: 828.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    716.25 : 1,074.84 = 551.88 : x
  2. Step 2: Convert to fraction form
    716.25/1,074.84 = 551.88/x
  3. Step 3: Cross multiply
    716.25x = 1,074.84 × 551.88
  4. Step 4: Simplify right side
    716.25x = 593,182.70
  5. Step 5: Solve for x
    x = 593,182.70/716.25
  6. Step 6: Final answer
    x = 828.18

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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.