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Finding the Fourth Proportional to 156, 232.59 and 146.82

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Solution

The fourth proportional to 156, 232.59 and 146.82 is: 218.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    156 : 232.59 = 146.82 : x
  2. Step 2: Convert to fraction form
    156/232.59 = 146.82/x
  3. Step 3: Cross multiply
    156x = 232.59 × 146.82
  4. Step 4: Simplify right side
    156x = 34,148.86
  5. Step 5: Solve for x
    x = 34,148.86/156
  6. Step 6: Final answer
    x = 218.90

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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.