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Finding the Fourth Proportional to 413.60, 620.18 and 277.52

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Solution

The fourth proportional to 413.60, 620.18 and 277.52 is: 416.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    413.60 : 620.18 = 277.52 : x
  2. Step 2: Convert to fraction form
    413.60/620.18 = 277.52/x
  3. Step 3: Cross multiply
    413.60x = 620.18 × 277.52
  4. Step 4: Simplify right side
    413.60x = 172,112.35
  5. Step 5: Solve for x
    x = 172,112.35/413.60
  6. Step 6: Final answer
    x = 416.13

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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.