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Finding the Fourth Proportional to 694.69, 1,041.49 and 347.85

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Solution

The fourth proportional to 694.69, 1,041.49 and 347.85 is: 521.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.69 : 1,041.49 = 347.85 : x
  2. Step 2: Convert to fraction form
    694.69/1,041.49 = 347.85/x
  3. Step 3: Cross multiply
    694.69x = 1,041.49 × 347.85
  4. Step 4: Simplify right side
    694.69x = 362,282.73
  5. Step 5: Solve for x
    x = 362,282.73/694.69
  6. Step 6: Final answer
    x = 521.50

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Double scale
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1.5x scale

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.