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Finding the Fourth Proportional to 488.88, 729.18 and 481.68

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Solution

The fourth proportional to 488.88, 729.18 and 481.68 is: 718.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.88 : 729.18 = 481.68 : x
  2. Step 2: Convert to fraction form
    488.88/729.18 = 481.68/x
  3. Step 3: Cross multiply
    488.88x = 729.18 × 481.68
  4. Step 4: Simplify right side
    488.88x = 351,231.42
  5. Step 5: Solve for x
    x = 351,231.42/488.88
  6. Step 6: Final answer
    x = 718.44

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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.