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Finding the Fourth Proportional to 571.94, 787.22 and 477.62

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Solution

The fourth proportional to 571.94, 787.22 and 477.62 is: 657.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.94 : 787.22 = 477.62 : x
  2. Step 2: Convert to fraction form
    571.94/787.22 = 477.62/x
  3. Step 3: Cross multiply
    571.94x = 787.22 × 477.62
  4. Step 4: Simplify right side
    571.94x = 375,985.69
  5. Step 5: Solve for x
    x = 375,985.69/571.94
  6. Step 6: Final answer
    x = 657.39

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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.