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Finding the Fourth Proportional to 347.02, 479.72 and 265.20

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Solution

The fourth proportional to 347.02, 479.72 and 265.20 is: 366.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.02 : 479.72 = 265.20 : x
  2. Step 2: Convert to fraction form
    347.02/479.72 = 265.20/x
  3. Step 3: Cross multiply
    347.02x = 479.72 × 265.20
  4. Step 4: Simplify right side
    347.02x = 127,221.74
  5. Step 5: Solve for x
    x = 127,221.74/347.02
  6. Step 6: Final answer
    x = 366.61

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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.