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Finding the Fourth Proportional to 369.44, 508.68 and 320.24

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Solution

The fourth proportional to 369.44, 508.68 and 320.24 is: 440.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.44 : 508.68 = 320.24 : x
  2. Step 2: Convert to fraction form
    369.44/508.68 = 320.24/x
  3. Step 3: Cross multiply
    369.44x = 508.68 × 320.24
  4. Step 4: Simplify right side
    369.44x = 162,899.68
  5. Step 5: Solve for x
    x = 162,899.68/369.44
  6. Step 6: Final answer
    x = 440.94

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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.