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Finding the Fourth Proportional to 1,090.37, 1,634.10 and 570.81

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Solution

The fourth proportional to 1,090.37, 1,634.10 and 570.81 is: 855.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,090.37 : 1,634.10 = 570.81 : x
  2. Step 2: Convert to fraction form
    1,090.37/1,634.10 = 570.81/x
  3. Step 3: Cross multiply
    1,090.37x = 1,634.10 × 570.81
  4. Step 4: Simplify right side
    1,090.37x = 932,760.62
  5. Step 5: Solve for x
    x = 932,760.62/1,090.37
  6. Step 6: Final answer
    x = 855.46

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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.