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Finding the Fourth Proportional to 1,062.88, 1,467.17 and 620.92

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Solution

The fourth proportional to 1,062.88, 1,467.17 and 620.92 is: 857.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,062.88 : 1,467.17 = 620.92 : x
  2. Step 2: Convert to fraction form
    1,062.88/1,467.17 = 620.92/x
  3. Step 3: Cross multiply
    1,062.88x = 1,467.17 × 620.92
  4. Step 4: Simplify right side
    1,062.88x = 910,995.20
  5. Step 5: Solve for x
    x = 910,995.20/1,062.88
  6. Step 6: Final answer
    x = 857.10

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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.