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Finding the Fourth Proportional to 571.01, 787.79 and 349.79

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Solution

The fourth proportional to 571.01, 787.79 and 349.79 is: 482.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.01 : 787.79 = 349.79 : x
  2. Step 2: Convert to fraction form
    571.01/787.79 = 349.79/x
  3. Step 3: Cross multiply
    571.01x = 787.79 × 349.79
  4. Step 4: Simplify right side
    571.01x = 275,558.00
  5. Step 5: Solve for x
    x = 275,558.00/571.01
  6. Step 6: Final answer
    x = 482.58

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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.