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Finding the Fourth Proportional to 297.64, 410.71 and 185.61

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Solution

The fourth proportional to 297.64, 410.71 and 185.61 is: 256.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.64 : 410.71 = 185.61 : x
  2. Step 2: Convert to fraction form
    297.64/410.71 = 185.61/x
  3. Step 3: Cross multiply
    297.64x = 410.71 × 185.61
  4. Step 4: Simplify right side
    297.64x = 76,231.88
  5. Step 5: Solve for x
    x = 76,231.88/297.64
  6. Step 6: Final answer
    x = 256.12

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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.