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Finding the Fourth Proportional to 618.04, 919.22 and 605.08

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Solution

The fourth proportional to 618.04, 919.22 and 605.08 is: 899.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.04 : 919.22 = 605.08 : x
  2. Step 2: Convert to fraction form
    618.04/919.22 = 605.08/x
  3. Step 3: Cross multiply
    618.04x = 919.22 × 605.08
  4. Step 4: Simplify right side
    618.04x = 556,201.64
  5. Step 5: Solve for x
    x = 556,201.64/618.04
  6. Step 6: Final answer
    x = 899.94

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.