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Finding the Fourth Proportional to 646.29, 968.90 and 440.37

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Solution

The fourth proportional to 646.29, 968.90 and 440.37 is: 660.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    646.29 : 968.90 = 440.37 : x
  2. Step 2: Convert to fraction form
    646.29/968.90 = 440.37/x
  3. Step 3: Cross multiply
    646.29x = 968.90 × 440.37
  4. Step 4: Simplify right side
    646.29x = 426,672.29
  5. Step 5: Solve for x
    x = 426,672.29/646.29
  6. Step 6: Final answer
    x = 660.19

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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.