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Finding the Fourth Proportional to 646.28, 969.17 and 235.19

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Solution

The fourth proportional to 646.28, 969.17 and 235.19 is: 352.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    646.28 : 969.17 = 235.19 : x
  2. Step 2: Convert to fraction form
    646.28/969.17 = 235.19/x
  3. Step 3: Cross multiply
    646.28x = 969.17 × 235.19
  4. Step 4: Simplify right side
    646.28x = 227,940.34
  5. Step 5: Solve for x
    x = 227,940.34/646.28
  6. Step 6: Final answer
    x = 352.70

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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.