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Finding the Fourth Proportional to 215.36, 296.88 and 166.16

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Solution

The fourth proportional to 215.36, 296.88 and 166.16 is: 229.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    215.36 : 296.88 = 166.16 : x
  2. Step 2: Convert to fraction form
    215.36/296.88 = 166.16/x
  3. Step 3: Cross multiply
    215.36x = 296.88 × 166.16
  4. Step 4: Simplify right side
    215.36x = 49,329.58
  5. Step 5: Solve for x
    x = 49,329.58/215.36
  6. Step 6: Final answer
    x = 229.06

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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.