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Finding the Fourth Proportional to 279.58, 386.00 and 174.79

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Solution

The fourth proportional to 279.58, 386.00 and 174.79 is: 241.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    279.58 : 386.00 = 174.79 : x
  2. Step 2: Convert to fraction form
    279.58/386.00 = 174.79/x
  3. Step 3: Cross multiply
    279.58x = 386.00 × 174.79
  4. Step 4: Simplify right side
    279.58x = 67,468.57
  5. Step 5: Solve for x
    x = 67,468.57/279.58
  6. Step 6: Final answer
    x = 241.32

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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.