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Finding the Fourth Proportional to 570.89, 857.01 and 480.71

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Solution

The fourth proportional to 570.89, 857.01 and 480.71 is: 721.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    570.89 : 857.01 = 480.71 : x
  2. Step 2: Convert to fraction form
    570.89/857.01 = 480.71/x
  3. Step 3: Cross multiply
    570.89x = 857.01 × 480.71
  4. Step 4: Simplify right side
    570.89x = 411,973.28
  5. Step 5: Solve for x
    x = 411,973.28/570.89
  6. Step 6: Final answer
    x = 721.63

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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.