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Finding the Fourth Proportional to 466.39, 643.42 and 267.19

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Solution

The fourth proportional to 466.39, 643.42 and 267.19 is: 368.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    466.39 : 643.42 = 267.19 : x
  2. Step 2: Convert to fraction form
    466.39/643.42 = 267.19/x
  3. Step 3: Cross multiply
    466.39x = 643.42 × 267.19
  4. Step 4: Simplify right side
    466.39x = 171,914.12
  5. Step 5: Solve for x
    x = 171,914.12/466.39
  6. Step 6: Final answer
    x = 368.60

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Double scale
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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.