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Finding the Fourth Proportional to 694.61, 1,041.65 and 283.61

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Solution

The fourth proportional to 694.61, 1,041.65 and 283.61 is: 425.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.61 : 1,041.65 = 283.61 : x
  2. Step 2: Convert to fraction form
    694.61/1,041.65 = 283.61/x
  3. Step 3: Cross multiply
    694.61x = 1,041.65 × 283.61
  4. Step 4: Simplify right side
    694.61x = 295,415.73
  5. Step 5: Solve for x
    x = 295,415.73/694.61
  6. Step 6: Final answer
    x = 425.30

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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.