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Finding the Fourth Proportional to 249.60, 374.40 and 164.10

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Solution

The fourth proportional to 249.60, 374.40 and 164.10 is: 246.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.60 : 374.40 = 164.10 : x
  2. Step 2: Convert to fraction form
    249.60/374.40 = 164.10/x
  3. Step 3: Cross multiply
    249.60x = 374.40 × 164.10
  4. Step 4: Simplify right side
    249.60x = 61,439.04
  5. Step 5: Solve for x
    x = 61,439.04/249.60
  6. Step 6: Final answer
    x = 246.15

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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.