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Finding the Fourth Proportional to 293.80, 440.54 and 131.40

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Solution

The fourth proportional to 293.80, 440.54 and 131.40 is: 197.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.80 : 440.54 = 131.40 : x
  2. Step 2: Convert to fraction form
    293.80/440.54 = 131.40/x
  3. Step 3: Cross multiply
    293.80x = 440.54 × 131.40
  4. Step 4: Simplify right side
    293.80x = 57,886.96
  5. Step 5: Solve for x
    x = 57,886.96/293.80
  6. Step 6: Final answer
    x = 197.03

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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.