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Finding the Fourth Proportional to 1,233.99, 1,702.94 and 674.49

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Solution

The fourth proportional to 1,233.99, 1,702.94 and 674.49 is: 930.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,233.99 : 1,702.94 = 674.49 : x
  2. Step 2: Convert to fraction form
    1,233.99/1,702.94 = 674.49/x
  3. Step 3: Cross multiply
    1,233.99x = 1,702.94 × 674.49
  4. Step 4: Simplify right side
    1,233.99x = 1,148,612.63
  5. Step 5: Solve for x
    x = 1,148,612.63/1,233.99
  6. Step 6: Final answer
    x = 930.81

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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.