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Finding the Fourth Proportional to 425.84, 586.96 and 327.40

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Solution

The fourth proportional to 425.84, 586.96 and 327.40 is: 451.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    425.84 : 586.96 = 327.40 : x
  2. Step 2: Convert to fraction form
    425.84/586.96 = 327.40/x
  3. Step 3: Cross multiply
    425.84x = 586.96 × 327.40
  4. Step 4: Simplify right side
    425.84x = 192,170.70
  5. Step 5: Solve for x
    x = 192,170.70/425.84
  6. Step 6: Final answer
    x = 451.27

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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.