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Finding the Fourth Proportional to 392.01, 588.06 and 290.58

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Solution

The fourth proportional to 392.01, 588.06 and 290.58 is: 435.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    392.01 : 588.06 = 290.58 : x
  2. Step 2: Convert to fraction form
    392.01/588.06 = 290.58/x
  3. Step 3: Cross multiply
    392.01x = 588.06 × 290.58
  4. Step 4: Simplify right side
    392.01x = 170,878.47
  5. Step 5: Solve for x
    x = 170,878.47/392.01
  6. Step 6: Final answer
    x = 435.90

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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.