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Finding the Fourth Proportional to 737.46, 1,018.71 and 648.81

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Solution

The fourth proportional to 737.46, 1,018.71 and 648.81 is: 896.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    737.46 : 1,018.71 = 648.81 : x
  2. Step 2: Convert to fraction form
    737.46/1,018.71 = 648.81/x
  3. Step 3: Cross multiply
    737.46x = 1,018.71 × 648.81
  4. Step 4: Simplify right side
    737.46x = 660,949.24
  5. Step 5: Solve for x
    x = 660,949.24/737.46
  6. Step 6: Final answer
    x = 896.25

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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.