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Finding the Fourth Proportional to 1,665.15, 2,498.13 and 495.14

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Solution

The fourth proportional to 1,665.15, 2,498.13 and 495.14 is: 742.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,665.15 : 2,498.13 = 495.14 : x
  2. Step 2: Convert to fraction form
    1,665.15/2,498.13 = 495.14/x
  3. Step 3: Cross multiply
    1,665.15x = 2,498.13 × 495.14
  4. Step 4: Simplify right side
    1,665.15x = 1,236,935.82
  5. Step 5: Solve for x
    x = 1,236,935.82/1,665.15
  6. Step 6: Final answer
    x = 742.84

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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.