Home / 1,020.12-1,529.28-404.28

Finding the Fourth Proportional to 1,020.12, 1,529.28 and 404.28

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Solution

The fourth proportional to 1,020.12, 1,529.28 and 404.28 is: 606.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020.12 : 1,529.28 = 404.28 : x
  2. Step 2: Convert to fraction form
    1,020.12/1,529.28 = 404.28/x
  3. Step 3: Cross multiply
    1,020.12x = 1,529.28 × 404.28
  4. Step 4: Simplify right side
    1,020.12x = 618,257.32
  5. Step 5: Solve for x
    x = 618,257.32/1,020.12
  6. Step 6: Final answer
    x = 606.06

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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.