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Finding the Fourth Proportional to 347.10, 479.66 and 284.82

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Solution

The fourth proportional to 347.10, 479.66 and 284.82 is: 393.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.10 : 479.66 = 284.82 : x
  2. Step 2: Convert to fraction form
    347.10/479.66 = 284.82/x
  3. Step 3: Cross multiply
    347.10x = 479.66 × 284.82
  4. Step 4: Simplify right side
    347.10x = 136,616.76
  5. Step 5: Solve for x
    x = 136,616.76/347.10
  6. Step 6: Final answer
    x = 393.59

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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.