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Finding the Fourth Proportional to 347.06, 479.04 and 308

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Solution

The fourth proportional to 347.06, 479.04 and 308 is: 425.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.06 : 479.04 = 308 : x
  2. Step 2: Convert to fraction form
    347.06/479.04 = 308/x
  3. Step 3: Cross multiply
    347.06x = 479.04 × 308
  4. Step 4: Simplify right side
    347.06x = 147,544.32
  5. Step 5: Solve for x
    x = 147,544.32/347.06
  6. Step 6: Final answer
    x = 425.13

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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.