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Finding the Fourth Proportional to 426.22, 588.14 and 286.50

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Solution

The fourth proportional to 426.22, 588.14 and 286.50 is: 395.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    426.22 : 588.14 = 286.50 : x
  2. Step 2: Convert to fraction form
    426.22/588.14 = 286.50/x
  3. Step 3: Cross multiply
    426.22x = 588.14 × 286.50
  4. Step 4: Simplify right side
    426.22x = 168,502.11
  5. Step 5: Solve for x
    x = 168,502.11/426.22
  6. Step 6: Final answer
    x = 395.34

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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.