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Finding the Fourth Proportional to 1,076.23, 1,614.57 and 637.32

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Solution

The fourth proportional to 1,076.23, 1,614.57 and 637.32 is: 956.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,076.23 : 1,614.57 = 637.32 : x
  2. Step 2: Convert to fraction form
    1,076.23/1,614.57 = 637.32/x
  3. Step 3: Cross multiply
    1,076.23x = 1,614.57 × 637.32
  4. Step 4: Simplify right side
    1,076.23x = 1,028,997.75
  5. Step 5: Solve for x
    x = 1,028,997.75/1,076.23
  6. Step 6: Final answer
    x = 956.11

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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.