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Finding the Fourth Proportional to 901, 1,351.50 and 388.36

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Solution

The fourth proportional to 901, 1,351.50 and 388.36 is: 582.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    901 : 1,351.50 = 388.36 : x
  2. Step 2: Convert to fraction form
    901/1,351.50 = 388.36/x
  3. Step 3: Cross multiply
    901x = 1,351.50 × 388.36
  4. Step 4: Simplify right side
    901x = 524,868.54
  5. Step 5: Solve for x
    x = 524,868.54/901
  6. Step 6: Final answer
    x = 582.54

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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.