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Finding the Fourth Proportional to 261.36, 392.44 and 249.82

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Solution

The fourth proportional to 261.36, 392.44 and 249.82 is: 375.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    261.36 : 392.44 = 249.82 : x
  2. Step 2: Convert to fraction form
    261.36/392.44 = 249.82/x
  3. Step 3: Cross multiply
    261.36x = 392.44 × 249.82
  4. Step 4: Simplify right side
    261.36x = 98,039.36
  5. Step 5: Solve for x
    x = 98,039.36/261.36
  6. Step 6: Final answer
    x = 375.11

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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.