Home / 1,087.45-1,631.72-357.37

Finding the Fourth Proportional to 1,087.45, 1,631.72 and 357.37

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Solution

The fourth proportional to 1,087.45, 1,631.72 and 357.37 is: 536.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087.45 : 1,631.72 = 357.37 : x
  2. Step 2: Convert to fraction form
    1,087.45/1,631.72 = 357.37/x
  3. Step 3: Cross multiply
    1,087.45x = 1,631.72 × 357.37
  4. Step 4: Simplify right side
    1,087.45x = 583,127.78
  5. Step 5: Solve for x
    x = 583,127.78/1,087.45
  6. Step 6: Final answer
    x = 536.23

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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.