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Finding the Fourth Proportional to 556.28, 767.52 and 323.24

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Solution

The fourth proportional to 556.28, 767.52 and 323.24 is: 445.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.28 : 767.52 = 323.24 : x
  2. Step 2: Convert to fraction form
    556.28/767.52 = 323.24/x
  3. Step 3: Cross multiply
    556.28x = 767.52 × 323.24
  4. Step 4: Simplify right side
    556.28x = 248,093.16
  5. Step 5: Solve for x
    x = 248,093.16/556.28
  6. Step 6: Final answer
    x = 445.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.