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Finding the Fourth Proportional to 491.43, 737.15 and 347.79

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Solution

The fourth proportional to 491.43, 737.15 and 347.79 is: 521.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    491.43 : 737.15 = 347.79 : x
  2. Step 2: Convert to fraction form
    491.43/737.15 = 347.79/x
  3. Step 3: Cross multiply
    491.43x = 737.15 × 347.79
  4. Step 4: Simplify right side
    491.43x = 256,371.66
  5. Step 5: Solve for x
    x = 256,371.66/491.43
  6. Step 6: Final answer
    x = 521.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.