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Finding the Fourth Proportional to 348.86, 523.28 and 92.36

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Solution

The fourth proportional to 348.86, 523.28 and 92.36 is: 138.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.86 : 523.28 = 92.36 : x
  2. Step 2: Convert to fraction form
    348.86/523.28 = 92.36/x
  3. Step 3: Cross multiply
    348.86x = 523.28 × 92.36
  4. Step 4: Simplify right side
    348.86x = 48,328.74
  5. Step 5: Solve for x
    x = 48,328.74/348.86
  6. Step 6: Final answer
    x = 138.53

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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.