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Finding the Fourth Proportional to 279.05, 383.01 and 247.26

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Solution

The fourth proportional to 279.05, 383.01 and 247.26 is: 339.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    279.05 : 383.01 = 247.26 : x
  2. Step 2: Convert to fraction form
    279.05/383.01 = 247.26/x
  3. Step 3: Cross multiply
    279.05x = 383.01 × 247.26
  4. Step 4: Simplify right side
    279.05x = 94,703.05
  5. Step 5: Solve for x
    x = 94,703.05/279.05
  6. Step 6: Final answer
    x = 339.38

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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.