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Finding the Fourth Proportional to 293.60, 438.96 and 225.12

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Solution

The fourth proportional to 293.60, 438.96 and 225.12 is: 336.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.60 : 438.96 = 225.12 : x
  2. Step 2: Convert to fraction form
    293.60/438.96 = 225.12/x
  3. Step 3: Cross multiply
    293.60x = 438.96 × 225.12
  4. Step 4: Simplify right side
    293.60x = 98,818.68
  5. Step 5: Solve for x
    x = 98,818.68/293.60
  6. Step 6: Final answer
    x = 336.58

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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.