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Finding the Fourth Proportional to 1,527.71, 2,108.22 and 864.56

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Solution

The fourth proportional to 1,527.71, 2,108.22 and 864.56 is: 1,193.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,527.71 : 2,108.22 = 864.56 : x
  2. Step 2: Convert to fraction form
    1,527.71/2,108.22 = 864.56/x
  3. Step 3: Cross multiply
    1,527.71x = 2,108.22 × 864.56
  4. Step 4: Simplify right side
    1,527.71x = 1,822,682.68
  5. Step 5: Solve for x
    x = 1,822,682.68/1,527.71
  6. Step 6: Final answer
    x = 1,193.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.