Home / 1,379.14-2,069.13-442.22

Finding the Fourth Proportional to 1,379.14, 2,069.13 and 442.22

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Solution

The fourth proportional to 1,379.14, 2,069.13 and 442.22 is: 663.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,379.14 : 2,069.13 = 442.22 : x
  2. Step 2: Convert to fraction form
    1,379.14/2,069.13 = 442.22/x
  3. Step 3: Cross multiply
    1,379.14x = 2,069.13 × 442.22
  4. Step 4: Simplify right side
    1,379.14x = 915,010.67
  5. Step 5: Solve for x
    x = 915,010.67/1,379.14
  6. Step 6: Final answer
    x = 663.47

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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.