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Finding the Fourth Proportional to 1,283.06, 1,924.75 and 461.42

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Solution

The fourth proportional to 1,283.06, 1,924.75 and 461.42 is: 692.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,283.06 : 1,924.75 = 461.42 : x
  2. Step 2: Convert to fraction form
    1,283.06/1,924.75 = 461.42/x
  3. Step 3: Cross multiply
    1,283.06x = 1,924.75 × 461.42
  4. Step 4: Simplify right side
    1,283.06x = 888,118.15
  5. Step 5: Solve for x
    x = 888,118.15/1,283.06
  6. Step 6: Final answer
    x = 692.19

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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.