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Finding the Fourth Proportional to 2,170.92, 3,256.38 and 527.45

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Solution

The fourth proportional to 2,170.92, 3,256.38 and 527.45 is: 791.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,170.92 : 3,256.38 = 527.45 : x
  2. Step 2: Convert to fraction form
    2,170.92/3,256.38 = 527.45/x
  3. Step 3: Cross multiply
    2,170.92x = 3,256.38 × 527.45
  4. Step 4: Simplify right side
    2,170.92x = 1,717,583.07
  5. Step 5: Solve for x
    x = 1,717,583.07/2,170.92
  6. Step 6: Final answer
    x = 791.18

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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.