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Finding the Fourth Proportional to 1,168.07, 1,611.81 and 670.61

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Solution

The fourth proportional to 1,168.07, 1,611.81 and 670.61 is: 925.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,168.07 : 1,611.81 = 670.61 : x
  2. Step 2: Convert to fraction form
    1,168.07/1,611.81 = 670.61/x
  3. Step 3: Cross multiply
    1,168.07x = 1,611.81 × 670.61
  4. Step 4: Simplify right side
    1,168.07x = 1,080,887.85
  5. Step 5: Solve for x
    x = 1,080,887.85/1,168.07
  6. Step 6: Final answer
    x = 925.37

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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.