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Finding the Fourth Proportional to 716.03, 1,074.35 and 485.18

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Solution

The fourth proportional to 716.03, 1,074.35 and 485.18 is: 727.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    716.03 : 1,074.35 = 485.18 : x
  2. Step 2: Convert to fraction form
    716.03/1,074.35 = 485.18/x
  3. Step 3: Cross multiply
    716.03x = 1,074.35 × 485.18
  4. Step 4: Simplify right side
    716.03x = 521,253.13
  5. Step 5: Solve for x
    x = 521,253.13/716.03
  6. Step 6: Final answer
    x = 727.98

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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.