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Finding the Fourth Proportional to 482.36, 722.79 and 239.02

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Solution

The fourth proportional to 482.36, 722.79 and 239.02 is: 358.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.36 : 722.79 = 239.02 : x
  2. Step 2: Convert to fraction form
    482.36/722.79 = 239.02/x
  3. Step 3: Cross multiply
    482.36x = 722.79 × 239.02
  4. Step 4: Simplify right side
    482.36x = 172,759.46
  5. Step 5: Solve for x
    x = 172,759.46/482.36
  6. Step 6: Final answer
    x = 358.16

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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.