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Finding the Fourth Proportional to 1,008.80, 1,504.57 and 886.21

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Solution

The fourth proportional to 1,008.80, 1,504.57 and 886.21 is: 1,321.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008.80 : 1,504.57 = 886.21 : x
  2. Step 2: Convert to fraction form
    1,008.80/1,504.57 = 886.21/x
  3. Step 3: Cross multiply
    1,008.80x = 1,504.57 × 886.21
  4. Step 4: Simplify right side
    1,008.80x = 1,333,367.20
  5. Step 5: Solve for x
    x = 1,333,367.20/1,008.80
  6. Step 6: Final answer
    x = 1,321.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.