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Finding the Fourth Proportional to 1,283.05, 1,924.75 and 461.17

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Solution

The fourth proportional to 1,283.05, 1,924.75 and 461.17 is: 691.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,283.05 : 1,924.75 = 461.17 : x
  2. Step 2: Convert to fraction form
    1,283.05/1,924.75 = 461.17/x
  3. Step 3: Cross multiply
    1,283.05x = 1,924.75 × 461.17
  4. Step 4: Simplify right side
    1,283.05x = 887,627.33
  5. Step 5: Solve for x
    x = 887,627.33/1,283.05
  6. Step 6: Final answer
    x = 691.81

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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.