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Finding the Fourth Proportional to 366.72, 505.62 and 293.28

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Solution

The fourth proportional to 366.72, 505.62 and 293.28 is: 404.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.72 : 505.62 = 293.28 : x
  2. Step 2: Convert to fraction form
    366.72/505.62 = 293.28/x
  3. Step 3: Cross multiply
    366.72x = 505.62 × 293.28
  4. Step 4: Simplify right side
    366.72x = 148,288.23
  5. Step 5: Solve for x
    x = 148,288.23/366.72
  6. Step 6: Final answer
    x = 404.36

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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.