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Finding the Fourth Proportional to 688.46, 1,032.84 and 226.27

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Solution

The fourth proportional to 688.46, 1,032.84 and 226.27 is: 339.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    688.46 : 1,032.84 = 226.27 : x
  2. Step 2: Convert to fraction form
    688.46/1,032.84 = 226.27/x
  3. Step 3: Cross multiply
    688.46x = 1,032.84 × 226.27
  4. Step 4: Simplify right side
    688.46x = 233,698.12
  5. Step 5: Solve for x
    x = 233,698.12/688.46
  6. Step 6: Final answer
    x = 339.45

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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.