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Finding the Fourth Proportional to 603.88, 832.11 and 571.20

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Solution

The fourth proportional to 603.88, 832.11 and 571.20 is: 787.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.88 : 832.11 = 571.20 : x
  2. Step 2: Convert to fraction form
    603.88/832.11 = 571.20/x
  3. Step 3: Cross multiply
    603.88x = 832.11 × 571.20
  4. Step 4: Simplify right side
    603.88x = 475,302.66
  5. Step 5: Solve for x
    x = 475,302.66/603.88
  6. Step 6: Final answer
    x = 787.09

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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.