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Finding the Fourth Proportional to 261.26, 391.57 and 184.10

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Solution

The fourth proportional to 261.26, 391.57 and 184.10 is: 275.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    261.26 : 391.57 = 184.10 : x
  2. Step 2: Convert to fraction form
    261.26/391.57 = 184.10/x
  3. Step 3: Cross multiply
    261.26x = 391.57 × 184.10
  4. Step 4: Simplify right side
    261.26x = 72,088.56
  5. Step 5: Solve for x
    x = 72,088.56/261.26
  6. Step 6: Final answer
    x = 275.93

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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.