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Finding the Fourth Proportional to 155.86, 214.75 and 112.12

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Solution

The fourth proportional to 155.86, 214.75 and 112.12 is: 154.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.86 : 214.75 = 112.12 : x
  2. Step 2: Convert to fraction form
    155.86/214.75 = 112.12/x
  3. Step 3: Cross multiply
    155.86x = 214.75 × 112.12
  4. Step 4: Simplify right side
    155.86x = 24,077.37
  5. Step 5: Solve for x
    x = 24,077.37/155.86
  6. Step 6: Final answer
    x = 154.48

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.