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Finding the Fourth Proportional to 1,208.48, 1,813.14 and 630.95

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Solution

The fourth proportional to 1,208.48, 1,813.14 and 630.95 is: 946.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208.48 : 1,813.14 = 630.95 : x
  2. Step 2: Convert to fraction form
    1,208.48/1,813.14 = 630.95/x
  3. Step 3: Cross multiply
    1,208.48x = 1,813.14 × 630.95
  4. Step 4: Simplify right side
    1,208.48x = 1,143,991.62
  5. Step 5: Solve for x
    x = 1,143,991.62/1,208.48
  6. Step 6: Final answer
    x = 946.64

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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.