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Finding the Fourth Proportional to 413.65, 620.58 and 341.38

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Solution

The fourth proportional to 413.65, 620.58 and 341.38 is: 512.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    413.65 : 620.58 = 341.38 : x
  2. Step 2: Convert to fraction form
    413.65/620.58 = 341.38/x
  3. Step 3: Cross multiply
    413.65x = 620.58 × 341.38
  4. Step 4: Simplify right side
    413.65x = 211,853.60
  5. Step 5: Solve for x
    x = 211,853.60/413.65
  6. Step 6: Final answer
    x = 512.16

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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.