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Finding the Fourth Proportional to 641.25, 962.08 and 352.89

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Solution

The fourth proportional to 641.25, 962.08 and 352.89 is: 529.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.25 : 962.08 = 352.89 : x
  2. Step 2: Convert to fraction form
    641.25/962.08 = 352.89/x
  3. Step 3: Cross multiply
    641.25x = 962.08 × 352.89
  4. Step 4: Simplify right side
    641.25x = 339,507.53
  5. Step 5: Solve for x
    x = 339,507.53/641.25
  6. Step 6: Final answer
    x = 529.45

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Double scale
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Similar ratio
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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.