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Finding the Fourth Proportional to 346.47, 519.09 and 308.81

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Solution

The fourth proportional to 346.47, 519.09 and 308.81 is: 462.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.47 : 519.09 = 308.81 : x
  2. Step 2: Convert to fraction form
    346.47/519.09 = 308.81/x
  3. Step 3: Cross multiply
    346.47x = 519.09 × 308.81
  4. Step 4: Simplify right side
    346.47x = 160,297.59
  5. Step 5: Solve for x
    x = 160,297.59/346.47
  6. Step 6: Final answer
    x = 462.66

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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.