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Finding the Fourth Proportional to 215.57, 297.49 and 168.99

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Solution

The fourth proportional to 215.57, 297.49 and 168.99 is: 233.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    215.57 : 297.49 = 168.99 : x
  2. Step 2: Convert to fraction form
    215.57/297.49 = 168.99/x
  3. Step 3: Cross multiply
    215.57x = 297.49 × 168.99
  4. Step 4: Simplify right side
    215.57x = 50,272.84
  5. Step 5: Solve for x
    x = 50,272.84/215.57
  6. Step 6: Final answer
    x = 233.21

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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.