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Finding the Fourth Proportional to 911.29, 1,257.10 and 600.25

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Solution

The fourth proportional to 911.29, 1,257.10 and 600.25 is: 828.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    911.29 : 1,257.10 = 600.25 : x
  2. Step 2: Convert to fraction form
    911.29/1,257.10 = 600.25/x
  3. Step 3: Cross multiply
    911.29x = 1,257.10 × 600.25
  4. Step 4: Simplify right side
    911.29x = 754,574.28
  5. Step 5: Solve for x
    x = 754,574.28/911.29
  6. Step 6: Final answer
    x = 828.03

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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.