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Finding the Fourth Proportional to 281.06, 387.75 and 207.35

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Solution

The fourth proportional to 281.06, 387.75 and 207.35 is: 286.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    281.06 : 387.75 = 207.35 : x
  2. Step 2: Convert to fraction form
    281.06/387.75 = 207.35/x
  3. Step 3: Cross multiply
    281.06x = 387.75 × 207.35
  4. Step 4: Simplify right side
    281.06x = 80,399.96
  5. Step 5: Solve for x
    x = 80,399.96/281.06
  6. Step 6: Final answer
    x = 286.06

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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.