Home / 1,053.20-1,579.80-404.39

Finding the Fourth Proportional to 1,053.20, 1,579.80 and 404.39

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Solution

The fourth proportional to 1,053.20, 1,579.80 and 404.39 is: 606.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,053.20 : 1,579.80 = 404.39 : x
  2. Step 2: Convert to fraction form
    1,053.20/1,579.80 = 404.39/x
  3. Step 3: Cross multiply
    1,053.20x = 1,579.80 × 404.39
  4. Step 4: Simplify right side
    1,053.20x = 638,847.42
  5. Step 5: Solve for x
    x = 638,847.42/1,053.20
  6. Step 6: Final answer
    x = 606.58

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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.