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Finding the Fourth Proportional to 156.56, 233.80 and 154.87

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Solution

The fourth proportional to 156.56, 233.80 and 154.87 is: 231.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    156.56 : 233.80 = 154.87 : x
  2. Step 2: Convert to fraction form
    156.56/233.80 = 154.87/x
  3. Step 3: Cross multiply
    156.56x = 233.80 × 154.87
  4. Step 4: Simplify right side
    156.56x = 36,207.44
  5. Step 5: Solve for x
    x = 36,207.44/156.56
  6. Step 6: Final answer
    x = 231.27

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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.