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Finding the Fourth Proportional to 1,177.32, 1,626 and 914.94

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Solution

The fourth proportional to 1,177.32, 1,626 and 914.94 is: 1,263.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,177.32 : 1,626 = 914.94 : x
  2. Step 2: Convert to fraction form
    1,177.32/1,626 = 914.94/x
  3. Step 3: Cross multiply
    1,177.32x = 1,626 × 914.94
  4. Step 4: Simplify right side
    1,177.32x = 1,487,692.44
  5. Step 5: Solve for x
    x = 1,487,692.44/1,177.32
  6. Step 6: Final answer
    x = 1,263.63

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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.