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Finding the Fourth Proportional to 293.88, 405.72 and 228.36

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Solution

The fourth proportional to 293.88, 405.72 and 228.36 is: 315.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.88 : 405.72 = 228.36 : x
  2. Step 2: Convert to fraction form
    293.88/405.72 = 228.36/x
  3. Step 3: Cross multiply
    293.88x = 405.72 × 228.36
  4. Step 4: Simplify right side
    293.88x = 92,650.22
  5. Step 5: Solve for x
    x = 92,650.22/293.88
  6. Step 6: Final answer
    x = 315.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.