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Finding the Fourth Proportional to 293.58, 440 and 131.08

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Solution

The fourth proportional to 293.58, 440 and 131.08 is: 196.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.58 : 440 = 131.08 : x
  2. Step 2: Convert to fraction form
    293.58/440 = 131.08/x
  3. Step 3: Cross multiply
    293.58x = 440 × 131.08
  4. Step 4: Simplify right side
    293.58x = 57,675.20
  5. Step 5: Solve for x
    x = 57,675.20/293.58
  6. Step 6: Final answer
    x = 196.45

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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.