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Finding the Fourth Proportional to 369.27, 509.99 and 328.55

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Solution

The fourth proportional to 369.27, 509.99 and 328.55 is: 453.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.27 : 509.99 = 328.55 : x
  2. Step 2: Convert to fraction form
    369.27/509.99 = 328.55/x
  3. Step 3: Cross multiply
    369.27x = 509.99 × 328.55
  4. Step 4: Simplify right side
    369.27x = 167,553.02
  5. Step 5: Solve for x
    x = 167,553.02/369.27
  6. Step 6: Final answer
    x = 453.74

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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.