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Finding the Fourth Proportional to 248.19, 342.45 and 160.85

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Solution

The fourth proportional to 248.19, 342.45 and 160.85 is: 221.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.19 : 342.45 = 160.85 : x
  2. Step 2: Convert to fraction form
    248.19/342.45 = 160.85/x
  3. Step 3: Cross multiply
    248.19x = 342.45 × 160.85
  4. Step 4: Simplify right side
    248.19x = 55,081.37
  5. Step 5: Solve for x
    x = 55,081.37/248.19
  6. Step 6: Final answer
    x = 221.93

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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.