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Finding the Fourth Proportional to 365.32, 502.88 and 318.03

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Solution

The fourth proportional to 365.32, 502.88 and 318.03 is: 437.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.32 : 502.88 = 318.03 : x
  2. Step 2: Convert to fraction form
    365.32/502.88 = 318.03/x
  3. Step 3: Cross multiply
    365.32x = 502.88 × 318.03
  4. Step 4: Simplify right side
    365.32x = 159,930.93
  5. Step 5: Solve for x
    x = 159,930.93/365.32
  6. Step 6: Final answer
    x = 437.78

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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.