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Finding the Fourth Proportional to 155.82, 214.75 and 112.08

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Solution

The fourth proportional to 155.82, 214.75 and 112.08 is: 154.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.82 : 214.75 = 112.08 : x
  2. Step 2: Convert to fraction form
    155.82/214.75 = 112.08/x
  3. Step 3: Cross multiply
    155.82x = 214.75 × 112.08
  4. Step 4: Simplify right side
    155.82x = 24,070.13
  5. Step 5: Solve for x
    x = 24,070.13/155.82
  6. Step 6: Final answer
    x = 154.47

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Why These Related Problems?

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