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Finding the Fourth Proportional to 482.36, 720.13 and 409.48

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Solution

The fourth proportional to 482.36, 720.13 and 409.48 is: 611.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.36 : 720.13 = 409.48 : x
  2. Step 2: Convert to fraction form
    482.36/720.13 = 409.48/x
  3. Step 3: Cross multiply
    482.36x = 720.13 × 409.48
  4. Step 4: Simplify right side
    482.36x = 294,878.83
  5. Step 5: Solve for x
    x = 294,878.83/482.36
  6. Step 6: Final answer
    x = 611.33

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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.