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Finding the Fourth Proportional to 369.39, 507.03 and 353.55

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Solution

The fourth proportional to 369.39, 507.03 and 353.55 is: 485.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.39 : 507.03 = 353.55 : x
  2. Step 2: Convert to fraction form
    369.39/507.03 = 353.55/x
  3. Step 3: Cross multiply
    369.39x = 507.03 × 353.55
  4. Step 4: Simplify right side
    369.39x = 179,260.46
  5. Step 5: Solve for x
    x = 179,260.46/369.39
  6. Step 6: Final answer
    x = 485.29

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.