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Finding the Fourth Proportional to 287.18, 396.18 and 182.25

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Solution

The fourth proportional to 287.18, 396.18 and 182.25 is: 251.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    287.18 : 396.18 = 182.25 : x
  2. Step 2: Convert to fraction form
    287.18/396.18 = 182.25/x
  3. Step 3: Cross multiply
    287.18x = 396.18 × 182.25
  4. Step 4: Simplify right side
    287.18x = 72,203.81
  5. Step 5: Solve for x
    x = 72,203.81/287.18
  6. Step 6: Final answer
    x = 251.43

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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.