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Finding the Fourth Proportional to 618.95, 852.26 and 605.28

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Solution

The fourth proportional to 618.95, 852.26 and 605.28 is: 833.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.95 : 852.26 = 605.28 : x
  2. Step 2: Convert to fraction form
    618.95/852.26 = 605.28/x
  3. Step 3: Cross multiply
    618.95x = 852.26 × 605.28
  4. Step 4: Simplify right side
    618.95x = 515,852.91
  5. Step 5: Solve for x
    x = 515,852.91/618.95
  6. Step 6: Final answer
    x = 833.44

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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.