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Finding the Fourth Proportional to 207.40, 285.78 and 182.56

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Solution

The fourth proportional to 207.40, 285.78 and 182.56 is: 251.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    207.40 : 285.78 = 182.56 : x
  2. Step 2: Convert to fraction form
    207.40/285.78 = 182.56/x
  3. Step 3: Cross multiply
    207.40x = 285.78 × 182.56
  4. Step 4: Simplify right side
    207.40x = 52,172.00
  5. Step 5: Solve for x
    x = 52,172.00/207.40
  6. Step 6: Final answer
    x = 251.55

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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.