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Finding the Fourth Proportional to 1,339.15, 2,008.52 and 461.51

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Solution

The fourth proportional to 1,339.15, 2,008.52 and 461.51 is: 692.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,339.15 : 2,008.52 = 461.51 : x
  2. Step 2: Convert to fraction form
    1,339.15/2,008.52 = 461.51/x
  3. Step 3: Cross multiply
    1,339.15x = 2,008.52 × 461.51
  4. Step 4: Simplify right side
    1,339.15x = 926,954.78
  5. Step 5: Solve for x
    x = 926,954.78/1,339.15
  6. Step 6: Final answer
    x = 692.20

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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.