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Finding the Fourth Proportional to 463.94, 695.07 and 387.39

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Solution

The fourth proportional to 463.94, 695.07 and 387.39 is: 580.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    463.94 : 695.07 = 387.39 : x
  2. Step 2: Convert to fraction form
    463.94/695.07 = 387.39/x
  3. Step 3: Cross multiply
    463.94x = 695.07 × 387.39
  4. Step 4: Simplify right side
    463.94x = 269,263.17
  5. Step 5: Solve for x
    x = 269,263.17/463.94
  6. Step 6: Final answer
    x = 580.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.