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Finding the Fourth Proportional to 1,147.32, 1,720.98 and 568.44

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Solution

The fourth proportional to 1,147.32, 1,720.98 and 568.44 is: 852.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147.32 : 1,720.98 = 568.44 : x
  2. Step 2: Convert to fraction form
    1,147.32/1,720.98 = 568.44/x
  3. Step 3: Cross multiply
    1,147.32x = 1,720.98 × 568.44
  4. Step 4: Simplify right side
    1,147.32x = 978,273.87
  5. Step 5: Solve for x
    x = 978,273.87/1,147.32
  6. Step 6: Final answer
    x = 852.66

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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.