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Finding the Fourth Proportional to 952.72, 1,429.28 and 303.50

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Solution

The fourth proportional to 952.72, 1,429.28 and 303.50 is: 455.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    952.72 : 1,429.28 = 303.50 : x
  2. Step 2: Convert to fraction form
    952.72/1,429.28 = 303.50/x
  3. Step 3: Cross multiply
    952.72x = 1,429.28 × 303.50
  4. Step 4: Simplify right side
    952.72x = 433,786.48
  5. Step 5: Solve for x
    x = 433,786.48/952.72
  6. Step 6: Final answer
    x = 455.31

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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.