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Finding the Fourth Proportional to 650.92, 898.29 and 356.21

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Solution

The fourth proportional to 650.92, 898.29 and 356.21 is: 491.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.92 : 898.29 = 356.21 : x
  2. Step 2: Convert to fraction form
    650.92/898.29 = 356.21/x
  3. Step 3: Cross multiply
    650.92x = 898.29 × 356.21
  4. Step 4: Simplify right side
    650.92x = 319,979.88
  5. Step 5: Solve for x
    x = 319,979.88/650.92
  6. Step 6: Final answer
    x = 491.58

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1.5x scale

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.