Home / 1,086.16-1,629.52-436.54

Finding the Fourth Proportional to 1,086.16, 1,629.52 and 436.54

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Solution

The fourth proportional to 1,086.16, 1,629.52 and 436.54 is: 654.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086.16 : 1,629.52 = 436.54 : x
  2. Step 2: Convert to fraction form
    1,086.16/1,629.52 = 436.54/x
  3. Step 3: Cross multiply
    1,086.16x = 1,629.52 × 436.54
  4. Step 4: Simplify right side
    1,086.16x = 711,350.66
  5. Step 5: Solve for x
    x = 711,350.66/1,086.16
  6. Step 6: Final answer
    x = 654.92

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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.