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Finding the Fourth Proportional to 1,074.82, 1,611.69 and 527.26

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Solution

The fourth proportional to 1,074.82, 1,611.69 and 527.26 is: 790.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,074.82 : 1,611.69 = 527.26 : x
  2. Step 2: Convert to fraction form
    1,074.82/1,611.69 = 527.26/x
  3. Step 3: Cross multiply
    1,074.82x = 1,611.69 × 527.26
  4. Step 4: Simplify right side
    1,074.82x = 849,779.67
  5. Step 5: Solve for x
    x = 849,779.67/1,074.82
  6. Step 6: Final answer
    x = 790.63

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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.