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Finding the Fourth Proportional to 381.95, 526.96 and 240.02

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Solution

The fourth proportional to 381.95, 526.96 and 240.02 is: 331.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    381.95 : 526.96 = 240.02 : x
  2. Step 2: Convert to fraction form
    381.95/526.96 = 240.02/x
  3. Step 3: Cross multiply
    381.95x = 526.96 × 240.02
  4. Step 4: Simplify right side
    381.95x = 126,479.59
  5. Step 5: Solve for x
    x = 126,479.59/381.95
  6. Step 6: Final answer
    x = 331.15

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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.