Home / 1,505.23-2,257.85-638.94

Finding the Fourth Proportional to 1,505.23, 2,257.85 and 638.94

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Solution

The fourth proportional to 1,505.23, 2,257.85 and 638.94 is: 958.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,505.23 : 2,257.85 = 638.94 : x
  2. Step 2: Convert to fraction form
    1,505.23/2,257.85 = 638.94/x
  3. Step 3: Cross multiply
    1,505.23x = 2,257.85 × 638.94
  4. Step 4: Simplify right side
    1,505.23x = 1,442,630.68
  5. Step 5: Solve for x
    x = 1,442,630.68/1,505.23
  6. Step 6: Final answer
    x = 958.41

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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.