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Finding the Fourth Proportional to 424.41, 632.93 and 388.97

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Solution

The fourth proportional to 424.41, 632.93 and 388.97 is: 580.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    424.41 : 632.93 = 388.97 : x
  2. Step 2: Convert to fraction form
    424.41/632.93 = 388.97/x
  3. Step 3: Cross multiply
    424.41x = 632.93 × 388.97
  4. Step 4: Simplify right side
    424.41x = 246,185.67
  5. Step 5: Solve for x
    x = 246,185.67/424.41
  6. Step 6: Final answer
    x = 580.07

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.