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Finding the Fourth Proportional to 1,010.12, 1,393.93 and 568.06

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Solution

The fourth proportional to 1,010.12, 1,393.93 and 568.06 is: 783.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,010.12 : 1,393.93 = 568.06 : x
  2. Step 2: Convert to fraction form
    1,010.12/1,393.93 = 568.06/x
  3. Step 3: Cross multiply
    1,010.12x = 1,393.93 × 568.06
  4. Step 4: Simplify right side
    1,010.12x = 791,830.97
  5. Step 5: Solve for x
    x = 791,830.97/1,010.12
  6. Step 6: Final answer
    x = 783.90

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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.