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Finding the Fourth Proportional to 628.91, 943.56 and 304.23

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Solution

The fourth proportional to 628.91, 943.56 and 304.23 is: 456.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.91 : 943.56 = 304.23 : x
  2. Step 2: Convert to fraction form
    628.91/943.56 = 304.23/x
  3. Step 3: Cross multiply
    628.91x = 943.56 × 304.23
  4. Step 4: Simplify right side
    628.91x = 287,059.26
  5. Step 5: Solve for x
    x = 287,059.26/628.91
  6. Step 6: Final answer
    x = 456.44

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Double scale
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Similar ratio
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1.5x scale

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.