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Finding the Fourth Proportional to 180, 271.44 and 156.24

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Solution

The fourth proportional to 180, 271.44 and 156.24 is: 235.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    180 : 271.44 = 156.24 : x
  2. Step 2: Convert to fraction form
    180/271.44 = 156.24/x
  3. Step 3: Cross multiply
    180x = 271.44 × 156.24
  4. Step 4: Simplify right side
    180x = 42,409.79
  5. Step 5: Solve for x
    x = 42,409.79/180
  6. Step 6: Final answer
    x = 235.61

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.