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Finding the Fourth Proportional to 1,400.76, 2,101.23 and 579.02

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Solution

The fourth proportional to 1,400.76, 2,101.23 and 579.02 is: 868.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400.76 : 2,101.23 = 579.02 : x
  2. Step 2: Convert to fraction form
    1,400.76/2,101.23 = 579.02/x
  3. Step 3: Cross multiply
    1,400.76x = 2,101.23 × 579.02
  4. Step 4: Simplify right side
    1,400.76x = 1,216,643.69
  5. Step 5: Solve for x
    x = 1,216,643.69/1,400.76
  6. Step 6: Final answer
    x = 868.56

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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.