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Finding the Fourth Proportional to 155.15, 232.60 and 100.34

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Solution

The fourth proportional to 155.15, 232.60 and 100.34 is: 150.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.15 : 232.60 = 100.34 : x
  2. Step 2: Convert to fraction form
    155.15/232.60 = 100.34/x
  3. Step 3: Cross multiply
    155.15x = 232.60 × 100.34
  4. Step 4: Simplify right side
    155.15x = 23,339.08
  5. Step 5: Solve for x
    x = 23,339.08/155.15
  6. Step 6: Final answer
    x = 150.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.