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Finding the Fourth Proportional to 388.33, 535.85 and 240.91

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Solution

The fourth proportional to 388.33, 535.85 and 240.91 is: 332.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    388.33 : 535.85 = 240.91 : x
  2. Step 2: Convert to fraction form
    388.33/535.85 = 240.91/x
  3. Step 3: Cross multiply
    388.33x = 535.85 × 240.91
  4. Step 4: Simplify right side
    388.33x = 129,089.98
  5. Step 5: Solve for x
    x = 129,089.98/388.33
  6. Step 6: Final answer
    x = 332.43

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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.