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Finding the Fourth Proportional to 426.55, 588.63 and 279.22

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Solution

The fourth proportional to 426.55, 588.63 and 279.22 is: 385.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    426.55 : 588.63 = 279.22 : x
  2. Step 2: Convert to fraction form
    426.55/588.63 = 279.22/x
  3. Step 3: Cross multiply
    426.55x = 588.63 × 279.22
  4. Step 4: Simplify right side
    426.55x = 164,357.27
  5. Step 5: Solve for x
    x = 164,357.27/426.55
  6. Step 6: Final answer
    x = 385.32

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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.