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Finding the Fourth Proportional to 215.00, 296.64 and 126.48

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Solution

The fourth proportional to 215.00, 296.64 and 126.48 is: 174.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    215.00 : 296.64 = 126.48 : x
  2. Step 2: Convert to fraction form
    215.00/296.64 = 126.48/x
  3. Step 3: Cross multiply
    215.00x = 296.64 × 126.48
  4. Step 4: Simplify right side
    215.00x = 37,519.03
  5. Step 5: Solve for x
    x = 37,519.03/215.00
  6. Step 6: Final answer
    x = 174.51

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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.