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Finding the Fourth Proportional to 347.04, 478.79 and 222.69

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Solution

The fourth proportional to 347.04, 478.79 and 222.69 is: 307.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.04 : 478.79 = 222.69 : x
  2. Step 2: Convert to fraction form
    347.04/478.79 = 222.69/x
  3. Step 3: Cross multiply
    347.04x = 478.79 × 222.69
  4. Step 4: Simplify right side
    347.04x = 106,620.63
  5. Step 5: Solve for x
    x = 106,620.63/347.04
  6. Step 6: Final answer
    x = 307.23

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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.