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Finding the Fourth Proportional to 571.30, 857.50 and 480.58

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Solution

The fourth proportional to 571.30, 857.50 and 480.58 is: 721.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.30 : 857.50 = 480.58 : x
  2. Step 2: Convert to fraction form
    571.30/857.50 = 480.58/x
  3. Step 3: Cross multiply
    571.30x = 857.50 × 480.58
  4. Step 4: Simplify right side
    571.30x = 412,097.35
  5. Step 5: Solve for x
    x = 412,097.35/571.30
  6. Step 6: Final answer
    x = 721.33

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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.