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Finding the Fourth Proportional to 942.84, 1,411.83 and 634.64

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Solution

The fourth proportional to 942.84, 1,411.83 and 634.64 is: 950.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    942.84 : 1,411.83 = 634.64 : x
  2. Step 2: Convert to fraction form
    942.84/1,411.83 = 634.64/x
  3. Step 3: Cross multiply
    942.84x = 1,411.83 × 634.64
  4. Step 4: Simplify right side
    942.84x = 895,996.73
  5. Step 5: Solve for x
    x = 895,996.73/942.84
  6. Step 6: Final answer
    x = 950.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.