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Finding the Fourth Proportional to 1,445.60, 2,168.21 and 568.76

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Solution

The fourth proportional to 1,445.60, 2,168.21 and 568.76 is: 853.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,445.60 : 2,168.21 = 568.76 : x
  2. Step 2: Convert to fraction form
    1,445.60/2,168.21 = 568.76/x
  3. Step 3: Cross multiply
    1,445.60x = 2,168.21 × 568.76
  4. Step 4: Simplify right side
    1,445.60x = 1,233,181.70
  5. Step 5: Solve for x
    x = 1,233,181.70/1,445.60
  6. Step 6: Final answer
    x = 853.06

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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.