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Finding the Fourth Proportional to 481.85, 718.98 and 477.20

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Solution

The fourth proportional to 481.85, 718.98 and 477.20 is: 712.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.85 : 718.98 = 477.20 : x
  2. Step 2: Convert to fraction form
    481.85/718.98 = 477.20/x
  3. Step 3: Cross multiply
    481.85x = 718.98 × 477.20
  4. Step 4: Simplify right side
    481.85x = 343,097.26
  5. Step 5: Solve for x
    x = 343,097.26/481.85
  6. Step 6: Final answer
    x = 712.04

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.