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Finding the Fourth Proportional to 347.48, 479.30 and 222.95

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Solution

The fourth proportional to 347.48, 479.30 and 222.95 is: 307.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.48 : 479.30 = 222.95 : x
  2. Step 2: Convert to fraction form
    347.48/479.30 = 222.95/x
  3. Step 3: Cross multiply
    347.48x = 479.30 × 222.95
  4. Step 4: Simplify right side
    347.48x = 106,858.58
  5. Step 5: Solve for x
    x = 106,858.58/347.48
  6. Step 6: Final answer
    x = 307.52

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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.