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Finding the Fourth Proportional to 1,178.33, 1,627.19 and 883.09

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Solution

The fourth proportional to 1,178.33, 1,627.19 and 883.09 is: 1,219.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178.33 : 1,627.19 = 883.09 : x
  2. Step 2: Convert to fraction form
    1,178.33/1,627.19 = 883.09/x
  3. Step 3: Cross multiply
    1,178.33x = 1,627.19 × 883.09
  4. Step 4: Simplify right side
    1,178.33x = 1,436,946.73
  5. Step 5: Solve for x
    x = 1,436,946.73/1,178.33
  6. Step 6: Final answer
    x = 1,219.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.