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Finding the Fourth Proportional to 1,283.67, 1,770.57 and 759.69

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Solution

The fourth proportional to 1,283.67, 1,770.57 and 759.69 is: 1,047.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,283.67 : 1,770.57 = 759.69 : x
  2. Step 2: Convert to fraction form
    1,283.67/1,770.57 = 759.69/x
  3. Step 3: Cross multiply
    1,283.67x = 1,770.57 × 759.69
  4. Step 4: Simplify right side
    1,283.67x = 1,345,084.32
  5. Step 5: Solve for x
    x = 1,345,084.32/1,283.67
  6. Step 6: Final answer
    x = 1,047.84

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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.