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Finding the Fourth Proportional to 243.56, 364.99 and 127.77

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Solution

The fourth proportional to 243.56, 364.99 and 127.77 is: 191.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.56 : 364.99 = 127.77 : x
  2. Step 2: Convert to fraction form
    243.56/364.99 = 127.77/x
  3. Step 3: Cross multiply
    243.56x = 364.99 × 127.77
  4. Step 4: Simplify right side
    243.56x = 46,634.13
  5. Step 5: Solve for x
    x = 46,634.13/243.56
  6. Step 6: Final answer
    x = 191.47

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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.