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Finding the Fourth Proportional to 169.96, 253.88 and 144.16

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Solution

The fourth proportional to 169.96, 253.88 and 144.16 is: 215.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.96 : 253.88 = 144.16 : x
  2. Step 2: Convert to fraction form
    169.96/253.88 = 144.16/x
  3. Step 3: Cross multiply
    169.96x = 253.88 × 144.16
  4. Step 4: Simplify right side
    169.96x = 36,599.34
  5. Step 5: Solve for x
    x = 36,599.34/169.96
  6. Step 6: Final answer
    x = 215.34

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.