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Finding the Fourth Proportional to 392.80, 588.84 and 176.32

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Solution

The fourth proportional to 392.80, 588.84 and 176.32 is: 264.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    392.80 : 588.84 = 176.32 : x
  2. Step 2: Convert to fraction form
    392.80/588.84 = 176.32/x
  3. Step 3: Cross multiply
    392.80x = 588.84 × 176.32
  4. Step 4: Simplify right side
    392.80x = 103,824.27
  5. Step 5: Solve for x
    x = 103,824.27/392.80
  6. Step 6: Final answer
    x = 264.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.