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Finding the Fourth Proportional to 986.66, 1,480.61 and 894.30

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Solution

The fourth proportional to 986.66, 1,480.61 and 894.30 is: 1,342.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    986.66 : 1,480.61 = 894.30 : x
  2. Step 2: Convert to fraction form
    986.66/1,480.61 = 894.30/x
  3. Step 3: Cross multiply
    986.66x = 1,480.61 × 894.30
  4. Step 4: Simplify right side
    986.66x = 1,324,109.52
  5. Step 5: Solve for x
    x = 1,324,109.52/986.66
  6. Step 6: Final answer
    x = 1,342.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.