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Finding the Fourth Proportional to 643.41, 964.53 and 232.26

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Solution

The fourth proportional to 643.41, 964.53 and 232.26 is: 348.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    643.41 : 964.53 = 232.26 : x
  2. Step 2: Convert to fraction form
    643.41/964.53 = 232.26/x
  3. Step 3: Cross multiply
    643.41x = 964.53 × 232.26
  4. Step 4: Simplify right side
    643.41x = 224,021.74
  5. Step 5: Solve for x
    x = 224,021.74/643.41
  6. Step 6: Final answer
    x = 348.18

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Double scale
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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.