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Finding the Fourth Proportional to 969.01, 1,338.17 and 703.84

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Solution

The fourth proportional to 969.01, 1,338.17 and 703.84 is: 971.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    969.01 : 1,338.17 = 703.84 : x
  2. Step 2: Convert to fraction form
    969.01/1,338.17 = 703.84/x
  3. Step 3: Cross multiply
    969.01x = 1,338.17 × 703.84
  4. Step 4: Simplify right side
    969.01x = 941,857.18
  5. Step 5: Solve for x
    x = 941,857.18/969.01
  6. Step 6: Final answer
    x = 971.98

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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.