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Finding the Fourth Proportional to 1,021.98, 1,410.41 and 579.93

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Solution

The fourth proportional to 1,021.98, 1,410.41 and 579.93 is: 800.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021.98 : 1,410.41 = 579.93 : x
  2. Step 2: Convert to fraction form
    1,021.98/1,410.41 = 579.93/x
  3. Step 3: Cross multiply
    1,021.98x = 1,410.41 × 579.93
  4. Step 4: Simplify right side
    1,021.98x = 817,939.07
  5. Step 5: Solve for x
    x = 817,939.07/1,021.98
  6. Step 6: Final answer
    x = 800.35

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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.