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Finding the Fourth Proportional to 366.56, 505.22 and 319.64

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Solution

The fourth proportional to 366.56, 505.22 and 319.64 is: 440.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.56 : 505.22 = 319.64 : x
  2. Step 2: Convert to fraction form
    366.56/505.22 = 319.64/x
  3. Step 3: Cross multiply
    366.56x = 505.22 × 319.64
  4. Step 4: Simplify right side
    366.56x = 161,488.52
  5. Step 5: Solve for x
    x = 161,488.52/366.56
  6. Step 6: Final answer
    x = 440.55

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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.