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Finding the Fourth Proportional to 966.94, 1,334.78 and 617.83

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Solution

The fourth proportional to 966.94, 1,334.78 and 617.83 is: 852.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    966.94 : 1,334.78 = 617.83 : x
  2. Step 2: Convert to fraction form
    966.94/1,334.78 = 617.83/x
  3. Step 3: Cross multiply
    966.94x = 1,334.78 × 617.83
  4. Step 4: Simplify right side
    966.94x = 824,663.02
  5. Step 5: Solve for x
    x = 824,663.02/966.94
  6. Step 6: Final answer
    x = 852.86

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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.