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Finding the Fourth Proportional to 571.41, 787.77 and 488.16

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Solution

The fourth proportional to 571.41, 787.77 and 488.16 is: 673.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.41 : 787.77 = 488.16 : x
  2. Step 2: Convert to fraction form
    571.41/787.77 = 488.16/x
  3. Step 3: Cross multiply
    571.41x = 787.77 × 488.16
  4. Step 4: Simplify right side
    571.41x = 384,557.80
  5. Step 5: Solve for x
    x = 384,557.80/571.41
  6. Step 6: Final answer
    x = 673.00

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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.