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Finding the Fourth Proportional to 737.73, 1,018.21 and 489.06

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Solution

The fourth proportional to 737.73, 1,018.21 and 489.06 is: 675.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    737.73 : 1,018.21 = 489.06 : x
  2. Step 2: Convert to fraction form
    737.73/1,018.21 = 489.06/x
  3. Step 3: Cross multiply
    737.73x = 1,018.21 × 489.06
  4. Step 4: Simplify right side
    737.73x = 497,965.78
  5. Step 5: Solve for x
    x = 497,965.78/737.73
  6. Step 6: Final answer
    x = 675.00

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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.