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Finding the Fourth Proportional to 214.74, 322.26 and 133.64

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Solution

The fourth proportional to 214.74, 322.26 and 133.64 is: 200.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    214.74 : 322.26 = 133.64 : x
  2. Step 2: Convert to fraction form
    214.74/322.26 = 133.64/x
  3. Step 3: Cross multiply
    214.74x = 322.26 × 133.64
  4. Step 4: Simplify right side
    214.74x = 43,066.83
  5. Step 5: Solve for x
    x = 43,066.83/214.74
  6. Step 6: Final answer
    x = 200.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.