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Finding the Fourth Proportional to 371.64, 556.30 and 248.35

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Solution

The fourth proportional to 371.64, 556.30 and 248.35 is: 371.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.64 : 556.30 = 248.35 : x
  2. Step 2: Convert to fraction form
    371.64/556.30 = 248.35/x
  3. Step 3: Cross multiply
    371.64x = 556.30 × 248.35
  4. Step 4: Simplify right side
    371.64x = 138,154.32
  5. Step 5: Solve for x
    x = 138,154.32/371.64
  6. Step 6: Final answer
    x = 371.74

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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.