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Finding the Fourth Proportional to 1,611.62, 2,417.40 and 516.06

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Solution

The fourth proportional to 1,611.62, 2,417.40 and 516.06 is: 774.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,611.62 : 2,417.40 = 516.06 : x
  2. Step 2: Convert to fraction form
    1,611.62/2,417.40 = 516.06/x
  3. Step 3: Cross multiply
    1,611.62x = 2,417.40 × 516.06
  4. Step 4: Simplify right side
    1,611.62x = 1,247,523.44
  5. Step 5: Solve for x
    x = 1,247,523.44/1,611.62
  6. Step 6: Final answer
    x = 774.08

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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.