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Finding the Fourth Proportional to 214.18, 295.47 and 126.80

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Solution

The fourth proportional to 214.18, 295.47 and 126.80 is: 174.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    214.18 : 295.47 = 126.80 : x
  2. Step 2: Convert to fraction form
    214.18/295.47 = 126.80/x
  3. Step 3: Cross multiply
    214.18x = 295.47 × 126.80
  4. Step 4: Simplify right side
    214.18x = 37,464.12
  5. Step 5: Solve for x
    x = 37,464.12/214.18
  6. Step 6: Final answer
    x = 174.92

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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.