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Finding the Fourth Proportional to 888.16, 1,333.17 and 426.33

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Solution

The fourth proportional to 888.16, 1,333.17 and 426.33 is: 639.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.16 : 1,333.17 = 426.33 : x
  2. Step 2: Convert to fraction form
    888.16/1,333.17 = 426.33/x
  3. Step 3: Cross multiply
    888.16x = 1,333.17 × 426.33
  4. Step 4: Simplify right side
    888.16x = 568,370.37
  5. Step 5: Solve for x
    x = 568,370.37/888.16
  6. Step 6: Final answer
    x = 639.94

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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.