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Finding the Fourth Proportional to 503.40, 694.86 and 304.34

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Solution

The fourth proportional to 503.40, 694.86 and 304.34 is: 420.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.40 : 694.86 = 304.34 : x
  2. Step 2: Convert to fraction form
    503.40/694.86 = 304.34/x
  3. Step 3: Cross multiply
    503.40x = 694.86 × 304.34
  4. Step 4: Simplify right side
    503.40x = 211,471.46
  5. Step 5: Solve for x
    x = 211,471.46/503.40
  6. Step 6: Final answer
    x = 420.09

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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.