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Finding the Fourth Proportional to 1,122.93, 1,549.52 and 625.47

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Solution

The fourth proportional to 1,122.93, 1,549.52 and 625.47 is: 863.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122.93 : 1,549.52 = 625.47 : x
  2. Step 2: Convert to fraction form
    1,122.93/1,549.52 = 625.47/x
  3. Step 3: Cross multiply
    1,122.93x = 1,549.52 × 625.47
  4. Step 4: Simplify right side
    1,122.93x = 969,185.93
  5. Step 5: Solve for x
    x = 969,185.93/1,122.93
  6. Step 6: Final answer
    x = 863.09

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1.5x scale

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.