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Finding the Fourth Proportional to 297.50, 410.55 and 186.98

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Solution

The fourth proportional to 297.50, 410.55 and 186.98 is: 258.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.50 : 410.55 = 186.98 : x
  2. Step 2: Convert to fraction form
    297.50/410.55 = 186.98/x
  3. Step 3: Cross multiply
    297.50x = 410.55 × 186.98
  4. Step 4: Simplify right side
    297.50x = 76,764.64
  5. Step 5: Solve for x
    x = 76,764.64/297.50
  6. Step 6: Final answer
    x = 258.03

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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.