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Finding the Fourth Proportional to 275.00, 378.68 and 187.52

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Solution

The fourth proportional to 275.00, 378.68 and 187.52 is: 258.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    275.00 : 378.68 = 187.52 : x
  2. Step 2: Convert to fraction form
    275.00/378.68 = 187.52/x
  3. Step 3: Cross multiply
    275.00x = 378.68 × 187.52
  4. Step 4: Simplify right side
    275.00x = 71,007.24
  5. Step 5: Solve for x
    x = 71,007.24/275.00
  6. Step 6: Final answer
    x = 258.21

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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.