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Finding the Fourth Proportional to 293.08, 439.17 and 148.72

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Solution

The fourth proportional to 293.08, 439.17 and 148.72 is: 222.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.08 : 439.17 = 148.72 : x
  2. Step 2: Convert to fraction form
    293.08/439.17 = 148.72/x
  3. Step 3: Cross multiply
    293.08x = 439.17 × 148.72
  4. Step 4: Simplify right side
    293.08x = 65,313.36
  5. Step 5: Solve for x
    x = 65,313.36/293.08
  6. Step 6: Final answer
    x = 222.85

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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.