Home / 1,131.02-1,696.44-309.42

Finding the Fourth Proportional to 1,131.02, 1,696.44 and 309.42

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Solution

The fourth proportional to 1,131.02, 1,696.44 and 309.42 is: 464.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131.02 : 1,696.44 = 309.42 : x
  2. Step 2: Convert to fraction form
    1,131.02/1,696.44 = 309.42/x
  3. Step 3: Cross multiply
    1,131.02x = 1,696.44 × 309.42
  4. Step 4: Simplify right side
    1,131.02x = 524,912.46
  5. Step 5: Solve for x
    x = 524,912.46/1,131.02
  6. Step 6: Final answer
    x = 464.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.