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Finding the Fourth Proportional to 293.45, 440.16 and 98.58

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Solution

The fourth proportional to 293.45, 440.16 and 98.58 is: 147.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.45 : 440.16 = 98.58 : x
  2. Step 2: Convert to fraction form
    293.45/440.16 = 98.58/x
  3. Step 3: Cross multiply
    293.45x = 440.16 × 98.58
  4. Step 4: Simplify right side
    293.45x = 43,390.97
  5. Step 5: Solve for x
    x = 43,390.97/293.45
  6. Step 6: Final answer
    x = 147.86

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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.