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Finding the Fourth Proportional to 1,514.81, 2,090.25 and 885.22

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Solution

The fourth proportional to 1,514.81, 2,090.25 and 885.22 is: 1,221.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,514.81 : 2,090.25 = 885.22 : x
  2. Step 2: Convert to fraction form
    1,514.81/2,090.25 = 885.22/x
  3. Step 3: Cross multiply
    1,514.81x = 2,090.25 × 885.22
  4. Step 4: Simplify right side
    1,514.81x = 1,850,325.88
  5. Step 5: Solve for x
    x = 1,850,325.88/1,514.81
  6. Step 6: Final answer
    x = 1,221.49

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Double scale
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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.