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Finding the Fourth Proportional to 248.77, 342.83 and 178.71

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Solution

The fourth proportional to 248.77, 342.83 and 178.71 is: 246.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.77 : 342.83 = 178.71 : x
  2. Step 2: Convert to fraction form
    248.77/342.83 = 178.71/x
  3. Step 3: Cross multiply
    248.77x = 342.83 × 178.71
  4. Step 4: Simplify right side
    248.77x = 61,266.31
  5. Step 5: Solve for x
    x = 61,266.31/248.77
  6. Step 6: Final answer
    x = 246.28

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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.