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Finding the Fourth Proportional to 214.31, 295.72 and 121.03

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Solution

The fourth proportional to 214.31, 295.72 and 121.03 is: 167.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    214.31 : 295.72 = 121.03 : x
  2. Step 2: Convert to fraction form
    214.31/295.72 = 121.03/x
  3. Step 3: Cross multiply
    214.31x = 295.72 × 121.03
  4. Step 4: Simplify right side
    214.31x = 35,789.95
  5. Step 5: Solve for x
    x = 35,789.95/214.31
  6. Step 6: Final answer
    x = 167.00

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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.