Home / 1,021.84-1,410.17-579.66

Finding the Fourth Proportional to 1,021.84, 1,410.17 and 579.66

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Solution

The fourth proportional to 1,021.84, 1,410.17 and 579.66 is: 799.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021.84 : 1,410.17 = 579.66 : x
  2. Step 2: Convert to fraction form
    1,021.84/1,410.17 = 579.66/x
  3. Step 3: Cross multiply
    1,021.84x = 1,410.17 × 579.66
  4. Step 4: Simplify right side
    1,021.84x = 817,419.14
  5. Step 5: Solve for x
    x = 817,419.14/1,021.84
  6. Step 6: Final answer
    x = 799.95

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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.