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Finding the Fourth Proportional to 1,284.75, 1,927.73 and 635.13

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Solution

The fourth proportional to 1,284.75, 1,927.73 and 635.13 is: 952.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284.75 : 1,927.73 = 635.13 : x
  2. Step 2: Convert to fraction form
    1,284.75/1,927.73 = 635.13/x
  3. Step 3: Cross multiply
    1,284.75x = 1,927.73 × 635.13
  4. Step 4: Simplify right side
    1,284.75x = 1,224,359.15
  5. Step 5: Solve for x
    x = 1,224,359.15/1,284.75
  6. Step 6: Final answer
    x = 952.99

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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.