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Finding the Fourth Proportional to 679.84, 938.46 and 504.88

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Solution

The fourth proportional to 679.84, 938.46 and 504.88 is: 696.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    679.84 : 938.46 = 504.88 : x
  2. Step 2: Convert to fraction form
    679.84/938.46 = 504.88/x
  3. Step 3: Cross multiply
    679.84x = 938.46 × 504.88
  4. Step 4: Simplify right side
    679.84x = 473,809.68
  5. Step 5: Solve for x
    x = 473,809.68/679.84
  6. Step 6: Final answer
    x = 696.94

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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.