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Finding the Fourth Proportional to 1,178.88, 1,614.06 and 1,174.74

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Solution

The fourth proportional to 1,178.88, 1,614.06 and 1,174.74 is: 1,608.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178.88 : 1,614.06 = 1,174.74 : x
  2. Step 2: Convert to fraction form
    1,178.88/1,614.06 = 1,174.74/x
  3. Step 3: Cross multiply
    1,178.88x = 1,614.06 × 1,174.74
  4. Step 4: Simplify right side
    1,178.88x = 1,896,100.84
  5. Step 5: Solve for x
    x = 1,896,100.84/1,178.88
  6. Step 6: Final answer
    x = 1,608.39

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.