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Finding the Fourth Proportional to 426.97, 588.65 and 279.55

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Solution

The fourth proportional to 426.97, 588.65 and 279.55 is: 385.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    426.97 : 588.65 = 279.55 : x
  2. Step 2: Convert to fraction form
    426.97/588.65 = 279.55/x
  3. Step 3: Cross multiply
    426.97x = 588.65 × 279.55
  4. Step 4: Simplify right side
    426.97x = 164,555.71
  5. Step 5: Solve for x
    x = 164,555.71/426.97
  6. Step 6: Final answer
    x = 385.40

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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.