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Finding the Fourth Proportional to 1,060.80, 1,465.39 and 850.70

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Solution

The fourth proportional to 1,060.80, 1,465.39 and 850.70 is: 1,175.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,060.80 : 1,465.39 = 850.70 : x
  2. Step 2: Convert to fraction form
    1,060.80/1,465.39 = 850.70/x
  3. Step 3: Cross multiply
    1,060.80x = 1,465.39 × 850.70
  4. Step 4: Simplify right side
    1,060.80x = 1,246,612.00
  5. Step 5: Solve for x
    x = 1,246,612.00/1,060.80
  6. Step 6: Final answer
    x = 1,175.17

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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.