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Finding the Fourth Proportional to 281.88, 387.64 and 245.08

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Solution

The fourth proportional to 281.88, 387.64 and 245.08 is: 337.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    281.88 : 387.64 = 245.08 : x
  2. Step 2: Convert to fraction form
    281.88/387.64 = 245.08/x
  3. Step 3: Cross multiply
    281.88x = 387.64 × 245.08
  4. Step 4: Simplify right side
    281.88x = 95,002.81
  5. Step 5: Solve for x
    x = 95,002.81/281.88
  6. Step 6: Final answer
    x = 337.03

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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.