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Finding the Fourth Proportional to 156.23, 233.43 and 126.97

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Solution

The fourth proportional to 156.23, 233.43 and 126.97 is: 189.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    156.23 : 233.43 = 126.97 : x
  2. Step 2: Convert to fraction form
    156.23/233.43 = 126.97/x
  3. Step 3: Cross multiply
    156.23x = 233.43 × 126.97
  4. Step 4: Simplify right side
    156.23x = 29,638.26
  5. Step 5: Solve for x
    x = 29,638.26/156.23
  6. Step 6: Final answer
    x = 189.71

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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.