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Finding the Fourth Proportional to 283.03, 387.75 and 272.09

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Solution

The fourth proportional to 283.03, 387.75 and 272.09 is: 372.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.03 : 387.75 = 272.09 : x
  2. Step 2: Convert to fraction form
    283.03/387.75 = 272.09/x
  3. Step 3: Cross multiply
    283.03x = 387.75 × 272.09
  4. Step 4: Simplify right side
    283.03x = 105,504.89
  5. Step 5: Solve for x
    x = 105,504.89/283.03
  6. Step 6: Final answer
    x = 372.77

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.