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Finding the Fourth Proportional to 392.16, 588.96 and 350.40

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Solution

The fourth proportional to 392.16, 588.96 and 350.40 is: 526.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    392.16 : 588.96 = 350.40 : x
  2. Step 2: Convert to fraction form
    392.16/588.96 = 350.40/x
  3. Step 3: Cross multiply
    392.16x = 588.96 × 350.40
  4. Step 4: Simplify right side
    392.16x = 206,371.58
  5. Step 5: Solve for x
    x = 206,371.58/392.16
  6. Step 6: Final answer
    x = 526.24

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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.