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Finding the Fourth Proportional to 369.60, 511.03 and 323.47

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Solution

The fourth proportional to 369.60, 511.03 and 323.47 is: 447.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.60 : 511.03 = 323.47 : x
  2. Step 2: Convert to fraction form
    369.60/511.03 = 323.47/x
  3. Step 3: Cross multiply
    369.60x = 511.03 × 323.47
  4. Step 4: Simplify right side
    369.60x = 165,302.87
  5. Step 5: Solve for x
    x = 165,302.87/369.60
  6. Step 6: Final answer
    x = 447.25

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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.