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Finding the Fourth Proportional to 426.61, 588.99 and 328.18

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Solution

The fourth proportional to 426.61, 588.99 and 328.18 is: 453.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    426.61 : 588.99 = 328.18 : x
  2. Step 2: Convert to fraction form
    426.61/588.99 = 328.18/x
  3. Step 3: Cross multiply
    426.61x = 588.99 × 328.18
  4. Step 4: Simplify right side
    426.61x = 193,294.74
  5. Step 5: Solve for x
    x = 193,294.74/426.61
  6. Step 6: Final answer
    x = 453.09

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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.