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Finding the Fourth Proportional to 1,180.41, 1,629.01 and 656.44

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Solution

The fourth proportional to 1,180.41, 1,629.01 and 656.44 is: 905.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,180.41 : 1,629.01 = 656.44 : x
  2. Step 2: Convert to fraction form
    1,180.41/1,629.01 = 656.44/x
  3. Step 3: Cross multiply
    1,180.41x = 1,629.01 × 656.44
  4. Step 4: Simplify right side
    1,180.41x = 1,069,344.07
  5. Step 5: Solve for x
    x = 1,069,344.07/1,180.41
  6. Step 6: Final answer
    x = 905.91

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1.5x scale

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.