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Finding the Fourth Proportional to 635.81, 953.41 and 413.08

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Solution

The fourth proportional to 635.81, 953.41 and 413.08 is: 619.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.81 : 953.41 = 413.08 : x
  2. Step 2: Convert to fraction form
    635.81/953.41 = 413.08/x
  3. Step 3: Cross multiply
    635.81x = 953.41 × 413.08
  4. Step 4: Simplify right side
    635.81x = 393,834.60
  5. Step 5: Solve for x
    x = 393,834.60/635.81
  6. Step 6: Final answer
    x = 619.42

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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.