Home / 1,086.34-1,629.56-316.84

Finding the Fourth Proportional to 1,086.34, 1,629.56 and 316.84

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Solution

The fourth proportional to 1,086.34, 1,629.56 and 316.84 is: 475.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086.34 : 1,629.56 = 316.84 : x
  2. Step 2: Convert to fraction form
    1,086.34/1,629.56 = 316.84/x
  3. Step 3: Cross multiply
    1,086.34x = 1,629.56 × 316.84
  4. Step 4: Simplify right side
    1,086.34x = 516,309.79
  5. Step 5: Solve for x
    x = 516,309.79/1,086.34
  6. Step 6: Final answer
    x = 475.27

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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.