Home / 1,086.65-1,629.81-356.13

Finding the Fourth Proportional to 1,086.65, 1,629.81 and 356.13

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Solution

The fourth proportional to 1,086.65, 1,629.81 and 356.13 is: 534.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086.65 : 1,629.81 = 356.13 : x
  2. Step 2: Convert to fraction form
    1,086.65/1,629.81 = 356.13/x
  3. Step 3: Cross multiply
    1,086.65x = 1,629.81 × 356.13
  4. Step 4: Simplify right side
    1,086.65x = 580,416.09
  5. Step 5: Solve for x
    x = 580,416.09/1,086.65
  6. Step 6: Final answer
    x = 534.14

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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.