Home / 1,087.20-1,629.55-500.98

Finding the Fourth Proportional to 1,087.20, 1,629.55 and 500.98

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Solution

The fourth proportional to 1,087.20, 1,629.55 and 500.98 is: 750.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087.20 : 1,629.55 = 500.98 : x
  2. Step 2: Convert to fraction form
    1,087.20/1,629.55 = 500.98/x
  3. Step 3: Cross multiply
    1,087.20x = 1,629.55 × 500.98
  4. Step 4: Simplify right side
    1,087.20x = 816,369.30
  5. Step 5: Solve for x
    x = 816,369.30/1,087.20
  6. Step 6: Final answer
    x = 750.89

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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.