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Finding the Fourth Proportional to 540.95, 811.17 and 248.38

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Solution

The fourth proportional to 540.95, 811.17 and 248.38 is: 372.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.95 : 811.17 = 248.38 : x
  2. Step 2: Convert to fraction form
    540.95/811.17 = 248.38/x
  3. Step 3: Cross multiply
    540.95x = 811.17 × 248.38
  4. Step 4: Simplify right side
    540.95x = 201,476.38
  5. Step 5: Solve for x
    x = 201,476.38/540.95
  6. Step 6: Final answer
    x = 372.45

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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.