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Finding the Fourth Proportional to 694.24, 1,041.72 and 347.84

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Solution

The fourth proportional to 694.24, 1,041.72 and 347.84 is: 521.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.24 : 1,041.72 = 347.84 : x
  2. Step 2: Convert to fraction form
    694.24/1,041.72 = 347.84/x
  3. Step 3: Cross multiply
    694.24x = 1,041.72 × 347.84
  4. Step 4: Simplify right side
    694.24x = 362,351.88
  5. Step 5: Solve for x
    x = 362,351.88/694.24
  6. Step 6: Final answer
    x = 521.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.