Home / 1,373.35-2,060.38-399.45

Finding the Fourth Proportional to 1,373.35, 2,060.38 and 399.45

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Solution

The fourth proportional to 1,373.35, 2,060.38 and 399.45 is: 599.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,373.35 : 2,060.38 = 399.45 : x
  2. Step 2: Convert to fraction form
    1,373.35/2,060.38 = 399.45/x
  3. Step 3: Cross multiply
    1,373.35x = 2,060.38 × 399.45
  4. Step 4: Simplify right side
    1,373.35x = 823,019.87
  5. Step 5: Solve for x
    x = 823,019.87/1,373.35
  6. Step 6: Final answer
    x = 599.28

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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.