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Finding the Fourth Proportional to 403.65, 605.61 and 160.11

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Solution

The fourth proportional to 403.65, 605.61 and 160.11 is: 240.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.65 : 605.61 = 160.11 : x
  2. Step 2: Convert to fraction form
    403.65/605.61 = 160.11/x
  3. Step 3: Cross multiply
    403.65x = 605.61 × 160.11
  4. Step 4: Simplify right side
    403.65x = 96,964.22
  5. Step 5: Solve for x
    x = 96,964.22/403.65
  6. Step 6: Final answer
    x = 240.22

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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.