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Finding the Fourth Proportional to 1,021.93, 1,410.22 and 579.82

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Solution

The fourth proportional to 1,021.93, 1,410.22 and 579.82 is: 800.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021.93 : 1,410.22 = 579.82 : x
  2. Step 2: Convert to fraction form
    1,021.93/1,410.22 = 579.82/x
  3. Step 3: Cross multiply
    1,021.93x = 1,410.22 × 579.82
  4. Step 4: Simplify right side
    1,021.93x = 817,670.34
  5. Step 5: Solve for x
    x = 817,670.34/1,021.93
  6. Step 6: Final answer
    x = 800.13

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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.