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Finding the Fourth Proportional to 1,010.20, 1,394.09 and 568.11

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Solution

The fourth proportional to 1,010.20, 1,394.09 and 568.11 is: 784.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,010.20 : 1,394.09 = 568.11 : x
  2. Step 2: Convert to fraction form
    1,010.20/1,394.09 = 568.11/x
  3. Step 3: Cross multiply
    1,010.20x = 1,394.09 × 568.11
  4. Step 4: Simplify right side
    1,010.20x = 791,996.47
  5. Step 5: Solve for x
    x = 791,996.47/1,010.20
  6. Step 6: Final answer
    x = 784.00

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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.