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Finding the Fourth Proportional to 1,393.06, 2,089.90 and 527.38

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Solution

The fourth proportional to 1,393.06, 2,089.90 and 527.38 is: 791.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393.06 : 2,089.90 = 527.38 : x
  2. Step 2: Convert to fraction form
    1,393.06/2,089.90 = 527.38/x
  3. Step 3: Cross multiply
    1,393.06x = 2,089.90 × 527.38
  4. Step 4: Simplify right side
    1,393.06x = 1,102,171.46
  5. Step 5: Solve for x
    x = 1,102,171.46/1,393.06
  6. Step 6: Final answer
    x = 791.19

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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.