Home / 1,087.46-1,631.25-356.88

Finding the Fourth Proportional to 1,087.46, 1,631.25 and 356.88

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Solution

The fourth proportional to 1,087.46, 1,631.25 and 356.88 is: 535.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087.46 : 1,631.25 = 356.88 : x
  2. Step 2: Convert to fraction form
    1,087.46/1,631.25 = 356.88/x
  3. Step 3: Cross multiply
    1,087.46x = 1,631.25 × 356.88
  4. Step 4: Simplify right side
    1,087.46x = 582,160.50
  5. Step 5: Solve for x
    x = 582,160.50/1,087.46
  6. Step 6: Final answer
    x = 535.34

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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.