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Finding the Fourth Proportional to 503.04, 693.84 and 306.48

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Solution

The fourth proportional to 503.04, 693.84 and 306.48 is: 422.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.04 : 693.84 = 306.48 : x
  2. Step 2: Convert to fraction form
    503.04/693.84 = 306.48/x
  3. Step 3: Cross multiply
    503.04x = 693.84 × 306.48
  4. Step 4: Simplify right side
    503.04x = 212,648.08
  5. Step 5: Solve for x
    x = 212,648.08/503.04
  6. Step 6: Final answer
    x = 422.73

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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.