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Finding the Fourth Proportional to 1,264.16, 1,896.56 and 484.17

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Solution

The fourth proportional to 1,264.16, 1,896.56 and 484.17 is: 726.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,264.16 : 1,896.56 = 484.17 : x
  2. Step 2: Convert to fraction form
    1,264.16/1,896.56 = 484.17/x
  3. Step 3: Cross multiply
    1,264.16x = 1,896.56 × 484.17
  4. Step 4: Simplify right side
    1,264.16x = 918,258.67
  5. Step 5: Solve for x
    x = 918,258.67/1,264.16
  6. Step 6: Final answer
    x = 726.38

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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.