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Finding the Fourth Proportional to 365.83, 504.45 and 318.79

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Solution

The fourth proportional to 365.83, 504.45 and 318.79 is: 439.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.83 : 504.45 = 318.79 : x
  2. Step 2: Convert to fraction form
    365.83/504.45 = 318.79/x
  3. Step 3: Cross multiply
    365.83x = 504.45 × 318.79
  4. Step 4: Simplify right side
    365.83x = 160,811.09
  5. Step 5: Solve for x
    x = 160,811.09/365.83
  6. Step 6: Final answer
    x = 439.58

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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.