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Finding the Fourth Proportional to 293.40, 440.16 and 185.76

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Solution

The fourth proportional to 293.40, 440.16 and 185.76 is: 278.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.40 : 440.16 = 185.76 : x
  2. Step 2: Convert to fraction form
    293.40/440.16 = 185.76/x
  3. Step 3: Cross multiply
    293.40x = 440.16 × 185.76
  4. Step 4: Simplify right side
    293.40x = 81,764.12
  5. Step 5: Solve for x
    x = 81,764.12/293.40
  6. Step 6: Final answer
    x = 278.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.