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Finding the Fourth Proportional to 632.28, 948.38 and 388.84

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Solution

The fourth proportional to 632.28, 948.38 and 388.84 is: 583.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.28 : 948.38 = 388.84 : x
  2. Step 2: Convert to fraction form
    632.28/948.38 = 388.84/x
  3. Step 3: Cross multiply
    632.28x = 948.38 × 388.84
  4. Step 4: Simplify right side
    632.28x = 368,768.08
  5. Step 5: Solve for x
    x = 368,768.08/632.28
  6. Step 6: Final answer
    x = 583.24

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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.