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Finding the Fourth Proportional to 888.46, 1,225.84 and 608.78

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Solution

The fourth proportional to 888.46, 1,225.84 and 608.78 is: 839.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.46 : 1,225.84 = 608.78 : x
  2. Step 2: Convert to fraction form
    888.46/1,225.84 = 608.78/x
  3. Step 3: Cross multiply
    888.46x = 1,225.84 × 608.78
  4. Step 4: Simplify right side
    888.46x = 746,266.88
  5. Step 5: Solve for x
    x = 746,266.88/888.46
  6. Step 6: Final answer
    x = 839.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.