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Finding the Fourth Proportional to 694.59, 1,042.05 and 283.77

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Solution

The fourth proportional to 694.59, 1,042.05 and 283.77 is: 425.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.59 : 1,042.05 = 283.77 : x
  2. Step 2: Convert to fraction form
    694.59/1,042.05 = 283.77/x
  3. Step 3: Cross multiply
    694.59x = 1,042.05 × 283.77
  4. Step 4: Simplify right side
    694.59x = 295,702.53
  5. Step 5: Solve for x
    x = 295,702.53/694.59
  6. Step 6: Final answer
    x = 425.72

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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.