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Finding the Fourth Proportional to 888.29, 1,226.62 and 557.29

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Solution

The fourth proportional to 888.29, 1,226.62 and 557.29 is: 769.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.29 : 1,226.62 = 557.29 : x
  2. Step 2: Convert to fraction form
    888.29/1,226.62 = 557.29/x
  3. Step 3: Cross multiply
    888.29x = 1,226.62 × 557.29
  4. Step 4: Simplify right side
    888.29x = 683,578.60
  5. Step 5: Solve for x
    x = 683,578.60/888.29
  6. Step 6: Final answer
    x = 769.54

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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.