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Finding the Fourth Proportional to 248.16, 371.91 and 190.11

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Solution

The fourth proportional to 248.16, 371.91 and 190.11 is: 284.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.16 : 371.91 = 190.11 : x
  2. Step 2: Convert to fraction form
    248.16/371.91 = 190.11/x
  3. Step 3: Cross multiply
    248.16x = 371.91 × 190.11
  4. Step 4: Simplify right side
    248.16x = 70,703.81
  5. Step 5: Solve for x
    x = 70,703.81/248.16
  6. Step 6: Final answer
    x = 284.91

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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.