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Finding the Fourth Proportional to 1,611.62, 2,417.90 and 675.02

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Solution

The fourth proportional to 1,611.62, 2,417.90 and 675.02 is: 1,012.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,611.62 : 2,417.90 = 675.02 : x
  2. Step 2: Convert to fraction form
    1,611.62/2,417.90 = 675.02/x
  3. Step 3: Cross multiply
    1,611.62x = 2,417.90 × 675.02
  4. Step 4: Simplify right side
    1,611.62x = 1,632,115.39
  5. Step 5: Solve for x
    x = 1,632,115.39/1,611.62
  6. Step 6: Final answer
    x = 1,012.72

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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.