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Finding the Fourth Proportional to 503.49, 694.90 and 293.70

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Solution

The fourth proportional to 503.49, 694.90 and 293.70 is: 405.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.49 : 694.90 = 293.70 : x
  2. Step 2: Convert to fraction form
    503.49/694.90 = 293.70/x
  3. Step 3: Cross multiply
    503.49x = 694.90 × 293.70
  4. Step 4: Simplify right side
    503.49x = 204,089.54
  5. Step 5: Solve for x
    x = 204,089.54/503.49
  6. Step 6: Final answer
    x = 405.35

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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.