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Finding the Fourth Proportional to 207.21, 286.10 and 132.56

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Solution

The fourth proportional to 207.21, 286.10 and 132.56 is: 183.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    207.21 : 286.10 = 132.56 : x
  2. Step 2: Convert to fraction form
    207.21/286.10 = 132.56/x
  3. Step 3: Cross multiply
    207.21x = 286.10 × 132.56
  4. Step 4: Simplify right side
    207.21x = 37,925.47
  5. Step 5: Solve for x
    x = 37,925.47/207.21
  6. Step 6: Final answer
    x = 183.03

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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.