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Finding the Fourth Proportional to 392.30, 588.60 and 290.44

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Solution

The fourth proportional to 392.30, 588.60 and 290.44 is: 435.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    392.30 : 588.60 = 290.44 : x
  2. Step 2: Convert to fraction form
    392.30/588.60 = 290.44/x
  3. Step 3: Cross multiply
    392.30x = 588.60 × 290.44
  4. Step 4: Simplify right side
    392.30x = 170,953.72
  5. Step 5: Solve for x
    x = 170,953.72/392.30
  6. Step 6: Final answer
    x = 435.77

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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.