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Finding the Fourth Proportional to 1,092.84, 1,507.95 and 627

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Solution

The fourth proportional to 1,092.84, 1,507.95 and 627 is: 865.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,092.84 : 1,507.95 = 627 : x
  2. Step 2: Convert to fraction form
    1,092.84/1,507.95 = 627/x
  3. Step 3: Cross multiply
    1,092.84x = 1,507.95 × 627
  4. Step 4: Simplify right side
    1,092.84x = 945,484.65
  5. Step 5: Solve for x
    x = 945,484.65/1,092.84
  6. Step 6: Final answer
    x = 865.16

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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.