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Finding the Fourth Proportional to 588.57, 811.67 and 439.55

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Solution

The fourth proportional to 588.57, 811.67 and 439.55 is: 606.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    588.57 : 811.67 = 439.55 : x
  2. Step 2: Convert to fraction form
    588.57/811.67 = 439.55/x
  3. Step 3: Cross multiply
    588.57x = 811.67 × 439.55
  4. Step 4: Simplify right side
    588.57x = 356,769.55
  5. Step 5: Solve for x
    x = 356,769.55/588.57
  6. Step 6: Final answer
    x = 606.16

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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.