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Finding the Fourth Proportional to 1,515.00, 2,272.53 and 998.31

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Solution

The fourth proportional to 1,515.00, 2,272.53 and 998.31 is: 1,497.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.00 : 2,272.53 = 998.31 : x
  2. Step 2: Convert to fraction form
    1,515.00/2,272.53 = 998.31/x
  3. Step 3: Cross multiply
    1,515.00x = 2,272.53 × 998.31
  4. Step 4: Simplify right side
    1,515.00x = 2,268,701.69
  5. Step 5: Solve for x
    x = 2,268,701.69/1,515.00
  6. Step 6: Final answer
    x = 1,497.49

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Double scale
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Similar ratio
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1.5x scale

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.