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Finding the Fourth Proportional to 297.29, 445.65 and 114.57

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Solution

The fourth proportional to 297.29, 445.65 and 114.57 is: 171.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.29 : 445.65 = 114.57 : x
  2. Step 2: Convert to fraction form
    297.29/445.65 = 114.57/x
  3. Step 3: Cross multiply
    297.29x = 445.65 × 114.57
  4. Step 4: Simplify right side
    297.29x = 51,058.12
  5. Step 5: Solve for x
    x = 51,058.12/297.29
  6. Step 6: Final answer
    x = 171.75

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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.