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Finding the Fourth Proportional to 2,168.75, 3,253.35 and 608.76

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Solution

The fourth proportional to 2,168.75, 3,253.35 and 608.76 is: 913.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,168.75 : 3,253.35 = 608.76 : x
  2. Step 2: Convert to fraction form
    2,168.75/3,253.35 = 608.76/x
  3. Step 3: Cross multiply
    2,168.75x = 3,253.35 × 608.76
  4. Step 4: Simplify right side
    2,168.75x = 1,980,508.20
  5. Step 5: Solve for x
    x = 1,980,508.20/2,168.75
  6. Step 6: Final answer
    x = 913.20

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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.