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Finding the Fourth Proportional to 392.62, 541.75 and 235.32

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Solution

The fourth proportional to 392.62, 541.75 and 235.32 is: 324.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    392.62 : 541.75 = 235.32 : x
  2. Step 2: Convert to fraction form
    392.62/541.75 = 235.32/x
  3. Step 3: Cross multiply
    392.62x = 541.75 × 235.32
  4. Step 4: Simplify right side
    392.62x = 127,484.61
  5. Step 5: Solve for x
    x = 127,484.61/392.62
  6. Step 6: Final answer
    x = 324.70

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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.