Home / 1,087.19-1,629.30-500.90

Finding the Fourth Proportional to 1,087.19, 1,629.30 and 500.90

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Solution

The fourth proportional to 1,087.19, 1,629.30 and 500.90 is: 750.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087.19 : 1,629.30 = 500.90 : x
  2. Step 2: Convert to fraction form
    1,087.19/1,629.30 = 500.90/x
  3. Step 3: Cross multiply
    1,087.19x = 1,629.30 × 500.90
  4. Step 4: Simplify right side
    1,087.19x = 816,114.68
  5. Step 5: Solve for x
    x = 816,114.68/1,087.19
  6. Step 6: Final answer
    x = 750.67

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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.