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Finding the Fourth Proportional to 1,516.62, 2,272.66 and 930.08

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Solution

The fourth proportional to 1,516.62, 2,272.66 and 930.08 is: 1,393.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,516.62 : 2,272.66 = 930.08 : x
  2. Step 2: Convert to fraction form
    1,516.62/2,272.66 = 930.08/x
  3. Step 3: Cross multiply
    1,516.62x = 2,272.66 × 930.08
  4. Step 4: Simplify right side
    1,516.62x = 2,113,758.97
  5. Step 5: Solve for x
    x = 2,113,758.97/1,516.62
  6. Step 6: Final answer
    x = 1,393.73

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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.