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Finding the Fourth Proportional to 168.91, 253.74 and 104.08

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Solution

The fourth proportional to 168.91, 253.74 and 104.08 is: 156.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.91 : 253.74 = 104.08 : x
  2. Step 2: Convert to fraction form
    168.91/253.74 = 104.08/x
  3. Step 3: Cross multiply
    168.91x = 253.74 × 104.08
  4. Step 4: Simplify right side
    168.91x = 26,409.26
  5. Step 5: Solve for x
    x = 26,409.26/168.91
  6. Step 6: Final answer
    x = 156.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.