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Finding the Fourth Proportional to 261.92, 392.95 and 124.94

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Solution

The fourth proportional to 261.92, 392.95 and 124.94 is: 187.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    261.92 : 392.95 = 124.94 : x
  2. Step 2: Convert to fraction form
    261.92/392.95 = 124.94/x
  3. Step 3: Cross multiply
    261.92x = 392.95 × 124.94
  4. Step 4: Simplify right side
    261.92x = 49,095.17
  5. Step 5: Solve for x
    x = 49,095.17/261.92
  6. Step 6: Final answer
    x = 187.44

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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.