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Finding the Fourth Proportional to 605.56, 906.36 and 400.36

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Solution

The fourth proportional to 605.56, 906.36 and 400.36 is: 599.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.56 : 906.36 = 400.36 : x
  2. Step 2: Convert to fraction form
    605.56/906.36 = 400.36/x
  3. Step 3: Cross multiply
    605.56x = 906.36 × 400.36
  4. Step 4: Simplify right side
    605.56x = 362,870.29
  5. Step 5: Solve for x
    x = 362,870.29/605.56
  6. Step 6: Final answer
    x = 599.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.