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Finding the Fourth Proportional to 1,205.71, 1,663.94 and 733.53

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Solution

The fourth proportional to 1,205.71, 1,663.94 and 733.53 is: 1,012.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,205.71 : 1,663.94 = 733.53 : x
  2. Step 2: Convert to fraction form
    1,205.71/1,663.94 = 733.53/x
  3. Step 3: Cross multiply
    1,205.71x = 1,663.94 × 733.53
  4. Step 4: Simplify right side
    1,205.71x = 1,220,549.91
  5. Step 5: Solve for x
    x = 1,220,549.91/1,205.71
  6. Step 6: Final answer
    x = 1,012.31

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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.