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Finding the Fourth Proportional to 179.08, 247.38 and 172.42

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Solution

The fourth proportional to 179.08, 247.38 and 172.42 is: 238.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.08 : 247.38 = 172.42 : x
  2. Step 2: Convert to fraction form
    179.08/247.38 = 172.42/x
  3. Step 3: Cross multiply
    179.08x = 247.38 × 172.42
  4. Step 4: Simplify right side
    179.08x = 42,653.26
  5. Step 5: Solve for x
    x = 42,653.26/179.08
  6. Step 6: Final answer
    x = 238.18

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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.