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Finding the Fourth Proportional to 1,393.43, 2,089.46 and 527.81

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Solution

The fourth proportional to 1,393.43, 2,089.46 and 527.81 is: 791.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393.43 : 2,089.46 = 527.81 : x
  2. Step 2: Convert to fraction form
    1,393.43/2,089.46 = 527.81/x
  3. Step 3: Cross multiply
    1,393.43x = 2,089.46 × 527.81
  4. Step 4: Simplify right side
    1,393.43x = 1,102,824.80
  5. Step 5: Solve for x
    x = 1,102,824.80/1,393.43
  6. Step 6: Final answer
    x = 791.45

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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.