Home / 1,173.26-1,618.96-649.18

Finding the Fourth Proportional to 1,173.26, 1,618.96 and 649.18

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Solution

The fourth proportional to 1,173.26, 1,618.96 and 649.18 is: 895.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,173.26 : 1,618.96 = 649.18 : x
  2. Step 2: Convert to fraction form
    1,173.26/1,618.96 = 649.18/x
  3. Step 3: Cross multiply
    1,173.26x = 1,618.96 × 649.18
  4. Step 4: Simplify right side
    1,173.26x = 1,050,996.45
  5. Step 5: Solve for x
    x = 1,050,996.45/1,173.26
  6. Step 6: Final answer
    x = 895.79

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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.