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Finding the Fourth Proportional to 628.92, 943.58 and 304.23

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Solution

The fourth proportional to 628.92, 943.58 and 304.23 is: 456.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.92 : 943.58 = 304.23 : x
  2. Step 2: Convert to fraction form
    628.92/943.58 = 304.23/x
  3. Step 3: Cross multiply
    628.92x = 943.58 × 304.23
  4. Step 4: Simplify right side
    628.92x = 287,063.82
  5. Step 5: Solve for x
    x = 287,063.82/628.92
  6. Step 6: Final answer
    x = 456.44

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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.