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Finding the Fourth Proportional to 1,720.78, 2,581.12 and 566.53

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Solution

The fourth proportional to 1,720.78, 2,581.12 and 566.53 is: 849.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.78 : 2,581.12 = 566.53 : x
  2. Step 2: Convert to fraction form
    1,720.78/2,581.12 = 566.53/x
  3. Step 3: Cross multiply
    1,720.78x = 2,581.12 × 566.53
  4. Step 4: Simplify right side
    1,720.78x = 1,462,276.17
  5. Step 5: Solve for x
    x = 1,462,276.17/1,720.78
  6. Step 6: Final answer
    x = 849.78

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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.