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Finding the Fourth Proportional to 367.36, 505.80 and 321.36

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Solution

The fourth proportional to 367.36, 505.80 and 321.36 is: 442.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.36 : 505.80 = 321.36 : x
  2. Step 2: Convert to fraction form
    367.36/505.80 = 321.36/x
  3. Step 3: Cross multiply
    367.36x = 505.80 × 321.36
  4. Step 4: Simplify right side
    367.36x = 162,543.89
  5. Step 5: Solve for x
    x = 162,543.89/367.36
  6. Step 6: Final answer
    x = 442.46

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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.