Home / 1,069.70-1,476.20-591.21

Finding the Fourth Proportional to 1,069.70, 1,476.20 and 591.21

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Solution

The fourth proportional to 1,069.70, 1,476.20 and 591.21 is: 815.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,069.70 : 1,476.20 = 591.21 : x
  2. Step 2: Convert to fraction form
    1,069.70/1,476.20 = 591.21/x
  3. Step 3: Cross multiply
    1,069.70x = 1,476.20 × 591.21
  4. Step 4: Simplify right side
    1,069.70x = 872,741.25
  5. Step 5: Solve for x
    x = 872,741.25/1,069.70
  6. Step 6: Final answer
    x = 815.88

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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.