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Finding the Fourth Proportional to 1,090.15, 1,635.23 and 1,036.15

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Solution

The fourth proportional to 1,090.15, 1,635.23 and 1,036.15 is: 1,554.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,090.15 : 1,635.23 = 1,036.15 : x
  2. Step 2: Convert to fraction form
    1,090.15/1,635.23 = 1,036.15/x
  3. Step 3: Cross multiply
    1,090.15x = 1,635.23 × 1,036.15
  4. Step 4: Simplify right side
    1,090.15x = 1,694,338.38
  5. Step 5: Solve for x
    x = 1,694,338.38/1,090.15
  6. Step 6: Final answer
    x = 1,554.23

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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.