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Finding the Fourth Proportional to 462.94, 637.79 and 380.57

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Solution

The fourth proportional to 462.94, 637.79 and 380.57 is: 524.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    462.94 : 637.79 = 380.57 : x
  2. Step 2: Convert to fraction form
    462.94/637.79 = 380.57/x
  3. Step 3: Cross multiply
    462.94x = 637.79 × 380.57
  4. Step 4: Simplify right side
    462.94x = 242,723.74
  5. Step 5: Solve for x
    x = 242,723.74/462.94
  6. Step 6: Final answer
    x = 524.31

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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.