Home / 1,050.20-1,449.32-578.12

Finding the Fourth Proportional to 1,050.20, 1,449.32 and 578.12

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Solution

The fourth proportional to 1,050.20, 1,449.32 and 578.12 is: 797.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,050.20 : 1,449.32 = 578.12 : x
  2. Step 2: Convert to fraction form
    1,050.20/1,449.32 = 578.12/x
  3. Step 3: Cross multiply
    1,050.20x = 1,449.32 × 578.12
  4. Step 4: Simplify right side
    1,050.20x = 837,883.78
  5. Step 5: Solve for x
    x = 837,883.78/1,050.20
  6. Step 6: Final answer
    x = 797.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.