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Finding the Fourth Proportional to 293.80, 439.80 and 277.60

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Solution

The fourth proportional to 293.80, 439.80 and 277.60 is: 415.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.80 : 439.80 = 277.60 : x
  2. Step 2: Convert to fraction form
    293.80/439.80 = 277.60/x
  3. Step 3: Cross multiply
    293.80x = 439.80 × 277.60
  4. Step 4: Simplify right side
    293.80x = 122,088.48
  5. Step 5: Solve for x
    x = 122,088.48/293.80
  6. Step 6: Final answer
    x = 415.55

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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.