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Finding the Fourth Proportional to 1,074.51, 1,611.64 and 294.58

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Solution

The fourth proportional to 1,074.51, 1,611.64 and 294.58 is: 441.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,074.51 : 1,611.64 = 294.58 : x
  2. Step 2: Convert to fraction form
    1,074.51/1,611.64 = 294.58/x
  3. Step 3: Cross multiply
    1,074.51x = 1,611.64 × 294.58
  4. Step 4: Simplify right side
    1,074.51x = 474,747.38
  5. Step 5: Solve for x
    x = 474,747.38/1,074.51
  6. Step 6: Final answer
    x = 441.83

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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.