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Finding the Fourth Proportional to 215.47, 297.02 and 168.74

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Solution

The fourth proportional to 215.47, 297.02 and 168.74 is: 232.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    215.47 : 297.02 = 168.74 : x
  2. Step 2: Convert to fraction form
    215.47/297.02 = 168.74/x
  3. Step 3: Cross multiply
    215.47x = 297.02 × 168.74
  4. Step 4: Simplify right side
    215.47x = 50,116.83
  5. Step 5: Solve for x
    x = 50,116.83/215.47
  6. Step 6: Final answer
    x = 232.60

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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.