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Finding the Fourth Proportional to 329.77, 491.75 and 284.41

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Solution

The fourth proportional to 329.77, 491.75 and 284.41 is: 424.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.77 : 491.75 = 284.41 : x
  2. Step 2: Convert to fraction form
    329.77/491.75 = 284.41/x
  3. Step 3: Cross multiply
    329.77x = 491.75 × 284.41
  4. Step 4: Simplify right side
    329.77x = 139,858.62
  5. Step 5: Solve for x
    x = 139,858.62/329.77
  6. Step 6: Final answer
    x = 424.11

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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.