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Finding the Fourth Proportional to 243.86, 336.85 and 188.66

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Solution

The fourth proportional to 243.86, 336.85 and 188.66 is: 260.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.86 : 336.85 = 188.66 : x
  2. Step 2: Convert to fraction form
    243.86/336.85 = 188.66/x
  3. Step 3: Cross multiply
    243.86x = 336.85 × 188.66
  4. Step 4: Simplify right side
    243.86x = 63,550.12
  5. Step 5: Solve for x
    x = 63,550.12/243.86
  6. Step 6: Final answer
    x = 260.60

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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.