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Finding the Fourth Proportional to 297.70, 410.58 and 186.98

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Solution

The fourth proportional to 297.70, 410.58 and 186.98 is: 257.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.70 : 410.58 = 186.98 : x
  2. Step 2: Convert to fraction form
    297.70/410.58 = 186.98/x
  3. Step 3: Cross multiply
    297.70x = 410.58 × 186.98
  4. Step 4: Simplify right side
    297.70x = 76,770.25
  5. Step 5: Solve for x
    x = 76,770.25/297.70
  6. Step 6: Final answer
    x = 257.88

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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.