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Finding the Fourth Proportional to 503.18, 694.38 and 328.52

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Solution

The fourth proportional to 503.18, 694.38 and 328.52 is: 453.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.18 : 694.38 = 328.52 : x
  2. Step 2: Convert to fraction form
    503.18/694.38 = 328.52/x
  3. Step 3: Cross multiply
    503.18x = 694.38 × 328.52
  4. Step 4: Simplify right side
    503.18x = 228,115.98
  5. Step 5: Solve for x
    x = 228,115.98/503.18
  6. Step 6: Final answer
    x = 453.35

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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.