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Finding the Fourth Proportional to 675.60, 932.16 and 413.64

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Solution

The fourth proportional to 675.60, 932.16 and 413.64 is: 570.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.60 : 932.16 = 413.64 : x
  2. Step 2: Convert to fraction form
    675.60/932.16 = 413.64/x
  3. Step 3: Cross multiply
    675.60x = 932.16 × 413.64
  4. Step 4: Simplify right side
    675.60x = 385,578.66
  5. Step 5: Solve for x
    x = 385,578.66/675.60
  6. Step 6: Final answer
    x = 570.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.