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Finding the Fourth Proportional to 347.36, 478.86 and 236.84

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Solution

The fourth proportional to 347.36, 478.86 and 236.84 is: 326.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.36 : 478.86 = 236.84 : x
  2. Step 2: Convert to fraction form
    347.36/478.86 = 236.84/x
  3. Step 3: Cross multiply
    347.36x = 478.86 × 236.84
  4. Step 4: Simplify right side
    347.36x = 113,413.20
  5. Step 5: Solve for x
    x = 113,413.20/347.36
  6. Step 6: Final answer
    x = 326.50

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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.