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Finding the Fourth Proportional to 466.49, 643.80 and 267.36

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Solution

The fourth proportional to 466.49, 643.80 and 267.36 is: 368.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    466.49 : 643.80 = 267.36 : x
  2. Step 2: Convert to fraction form
    466.49/643.80 = 267.36/x
  3. Step 3: Cross multiply
    466.49x = 643.80 × 267.36
  4. Step 4: Simplify right side
    466.49x = 172,126.37
  5. Step 5: Solve for x
    x = 172,126.37/466.49
  6. Step 6: Final answer
    x = 368.99

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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.