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Finding the Fourth Proportional to 503.24, 694.60 and 306.89

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Solution

The fourth proportional to 503.24, 694.60 and 306.89 is: 423.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.24 : 694.60 = 306.89 : x
  2. Step 2: Convert to fraction form
    503.24/694.60 = 306.89/x
  3. Step 3: Cross multiply
    503.24x = 694.60 × 306.89
  4. Step 4: Simplify right side
    503.24x = 213,165.79
  5. Step 5: Solve for x
    x = 213,165.79/503.24
  6. Step 6: Final answer
    x = 423.59

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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.