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Finding the Fourth Proportional to 1,074.03, 1,609.20 and 587.42

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Solution

The fourth proportional to 1,074.03, 1,609.20 and 587.42 is: 880.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,074.03 : 1,609.20 = 587.42 : x
  2. Step 2: Convert to fraction form
    1,074.03/1,609.20 = 587.42/x
  3. Step 3: Cross multiply
    1,074.03x = 1,609.20 × 587.42
  4. Step 4: Simplify right side
    1,074.03x = 945,268.22
  5. Step 5: Solve for x
    x = 945,268.22/1,074.03
  6. Step 6: Final answer
    x = 880.11

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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.