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Finding the Fourth Proportional to 281, 387.36 and 248.08

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Solution

The fourth proportional to 281, 387.36 and 248.08 is: 341.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    281 : 387.36 = 248.08 : x
  2. Step 2: Convert to fraction form
    281/387.36 = 248.08/x
  3. Step 3: Cross multiply
    281x = 387.36 × 248.08
  4. Step 4: Simplify right side
    281x = 96,096.27
  5. Step 5: Solve for x
    x = 96,096.27/281
  6. Step 6: Final answer
    x = 341.98

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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.