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Finding the Fourth Proportional to 572.87, 791.00 and 448.31

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Solution

The fourth proportional to 572.87, 791.00 and 448.31 is: 619.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.87 : 791.00 = 448.31 : x
  2. Step 2: Convert to fraction form
    572.87/791.00 = 448.31/x
  3. Step 3: Cross multiply
    572.87x = 791.00 × 448.31
  4. Step 4: Simplify right side
    572.87x = 354,607.01
  5. Step 5: Solve for x
    x = 354,607.01/572.87
  6. Step 6: Final answer
    x = 619.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.