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Finding the Fourth Proportional to 248.11, 342.35 and 210.92

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Solution

The fourth proportional to 248.11, 342.35 and 210.92 is: 291.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.11 : 342.35 = 210.92 : x
  2. Step 2: Convert to fraction form
    248.11/342.35 = 210.92/x
  3. Step 3: Cross multiply
    248.11x = 342.35 × 210.92
  4. Step 4: Simplify right side
    248.11x = 72,207.28
  5. Step 5: Solve for x
    x = 72,207.28/248.11
  6. Step 6: Final answer
    x = 291.03

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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.