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Finding the Fourth Proportional to 214.76, 322.23 and 118.64

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Solution

The fourth proportional to 214.76, 322.23 and 118.64 is: 178.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    214.76 : 322.23 = 118.64 : x
  2. Step 2: Convert to fraction form
    214.76/322.23 = 118.64/x
  3. Step 3: Cross multiply
    214.76x = 322.23 × 118.64
  4. Step 4: Simplify right side
    214.76x = 38,229.37
  5. Step 5: Solve for x
    x = 38,229.37/214.76
  6. Step 6: Final answer
    x = 178.01

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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.