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Finding the Fourth Proportional to 347.60, 479.84 and 216.69

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Solution

The fourth proportional to 347.60, 479.84 and 216.69 is: 299.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.60 : 479.84 = 216.69 : x
  2. Step 2: Convert to fraction form
    347.60/479.84 = 216.69/x
  3. Step 3: Cross multiply
    347.60x = 479.84 × 216.69
  4. Step 4: Simplify right side
    347.60x = 103,975.45
  5. Step 5: Solve for x
    x = 103,975.45/347.60
  6. Step 6: Final answer
    x = 299.13

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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.