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Finding the Fourth Proportional to 963.18, 1,328.22 and 683.37

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Solution

The fourth proportional to 963.18, 1,328.22 and 683.37 is: 942.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    963.18 : 1,328.22 = 683.37 : x
  2. Step 2: Convert to fraction form
    963.18/1,328.22 = 683.37/x
  3. Step 3: Cross multiply
    963.18x = 1,328.22 × 683.37
  4. Step 4: Simplify right side
    963.18x = 907,665.70
  5. Step 5: Solve for x
    x = 907,665.70/963.18
  6. Step 6: Final answer
    x = 942.36

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1.5x scale

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.