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Finding the Fourth Proportional to 1,616.73, 2,231.06 and 953.57

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Solution

The fourth proportional to 1,616.73, 2,231.06 and 953.57 is: 1,315.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,616.73 : 2,231.06 = 953.57 : x
  2. Step 2: Convert to fraction form
    1,616.73/2,231.06 = 953.57/x
  3. Step 3: Cross multiply
    1,616.73x = 2,231.06 × 953.57
  4. Step 4: Simplify right side
    1,616.73x = 2,127,455.96
  5. Step 5: Solve for x
    x = 2,127,455.96/1,616.73
  6. Step 6: Final answer
    x = 1,315.90

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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.