Home / 1,087.89-1,631.73-357.27

Finding the Fourth Proportional to 1,087.89, 1,631.73 and 357.27

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Solution

The fourth proportional to 1,087.89, 1,631.73 and 357.27 is: 535.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087.89 : 1,631.73 = 357.27 : x
  2. Step 2: Convert to fraction form
    1,087.89/1,631.73 = 357.27/x
  3. Step 3: Cross multiply
    1,087.89x = 1,631.73 × 357.27
  4. Step 4: Simplify right side
    1,087.89x = 582,968.18
  5. Step 5: Solve for x
    x = 582,968.18/1,087.89
  6. Step 6: Final answer
    x = 535.87

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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.