Home / 1,086.09-1,629.54-437.28

Finding the Fourth Proportional to 1,086.09, 1,629.54 and 437.28

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Solution

The fourth proportional to 1,086.09, 1,629.54 and 437.28 is: 656.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086.09 : 1,629.54 = 437.28 : x
  2. Step 2: Convert to fraction form
    1,086.09/1,629.54 = 437.28/x
  3. Step 3: Cross multiply
    1,086.09x = 1,629.54 × 437.28
  4. Step 4: Simplify right side
    1,086.09x = 712,565.25
  5. Step 5: Solve for x
    x = 712,565.25/1,086.09
  6. Step 6: Final answer
    x = 656.08

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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.