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Finding the Fourth Proportional to 155.86, 232.43 and 146.68

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Solution

The fourth proportional to 155.86, 232.43 and 146.68 is: 218.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.86 : 232.43 = 146.68 : x
  2. Step 2: Convert to fraction form
    155.86/232.43 = 146.68/x
  3. Step 3: Cross multiply
    155.86x = 232.43 × 146.68
  4. Step 4: Simplify right side
    155.86x = 34,092.83
  5. Step 5: Solve for x
    x = 34,092.83/155.86
  6. Step 6: Final answer
    x = 218.74

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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.