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Finding the Fourth Proportional to 969.95, 1,338.50 and 566.25

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Solution

The fourth proportional to 969.95, 1,338.50 and 566.25 is: 781.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    969.95 : 1,338.50 = 566.25 : x
  2. Step 2: Convert to fraction form
    969.95/1,338.50 = 566.25/x
  3. Step 3: Cross multiply
    969.95x = 1,338.50 × 566.25
  4. Step 4: Simplify right side
    969.95x = 757,924.21
  5. Step 5: Solve for x
    x = 757,924.21/969.95
  6. Step 6: Final answer
    x = 781.41

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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.