Home / 1,370.16-2,054.21-445.16

Finding the Fourth Proportional to 1,370.16, 2,054.21 and 445.16

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Solution

The fourth proportional to 1,370.16, 2,054.21 and 445.16 is: 667.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,370.16 : 2,054.21 = 445.16 : x
  2. Step 2: Convert to fraction form
    1,370.16/2,054.21 = 445.16/x
  3. Step 3: Cross multiply
    1,370.16x = 2,054.21 × 445.16
  4. Step 4: Simplify right side
    1,370.16x = 914,456.15
  5. Step 5: Solve for x
    x = 914,456.15/1,370.16
  6. Step 6: Final answer
    x = 667.41

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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.