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Finding the Fourth Proportional to 503.06, 694.35 and 306.74

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Solution

The fourth proportional to 503.06, 694.35 and 306.74 is: 423.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.06 : 694.35 = 306.74 : x
  2. Step 2: Convert to fraction form
    503.06/694.35 = 306.74/x
  3. Step 3: Cross multiply
    503.06x = 694.35 × 306.74
  4. Step 4: Simplify right side
    503.06x = 212,981.89
  5. Step 5: Solve for x
    x = 212,981.89/503.06
  6. Step 6: Final answer
    x = 423.37

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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.