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Finding the Fourth Proportional to 395.94, 546.66 and 248.80

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Solution

The fourth proportional to 395.94, 546.66 and 248.80 is: 343.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.94 : 546.66 = 248.80 : x
  2. Step 2: Convert to fraction form
    395.94/546.66 = 248.80/x
  3. Step 3: Cross multiply
    395.94x = 546.66 × 248.80
  4. Step 4: Simplify right side
    395.94x = 136,009.01
  5. Step 5: Solve for x
    x = 136,009.01/395.94
  6. Step 6: Final answer
    x = 343.51

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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.