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Finding the Fourth Proportional to 559.96, 838.14 and 413.65

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Solution

The fourth proportional to 559.96, 838.14 and 413.65 is: 619.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    559.96 : 838.14 = 413.65 : x
  2. Step 2: Convert to fraction form
    559.96/838.14 = 413.65/x
  3. Step 3: Cross multiply
    559.96x = 838.14 × 413.65
  4. Step 4: Simplify right side
    559.96x = 346,696.61
  5. Step 5: Solve for x
    x = 346,696.61/559.96
  6. Step 6: Final answer
    x = 619.15

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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.