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Finding the Fourth Proportional to 340.91, 507.97 and 329.87

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Solution

The fourth proportional to 340.91, 507.97 and 329.87 is: 491.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.91 : 507.97 = 329.87 : x
  2. Step 2: Convert to fraction form
    340.91/507.97 = 329.87/x
  3. Step 3: Cross multiply
    340.91x = 507.97 × 329.87
  4. Step 4: Simplify right side
    340.91x = 167,565.75
  5. Step 5: Solve for x
    x = 167,565.75/340.91
  6. Step 6: Final answer
    x = 491.53

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.