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Finding the Fourth Proportional to 466.34, 643.59 and 267.20

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Solution

The fourth proportional to 466.34, 643.59 and 267.20 is: 368.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    466.34 : 643.59 = 267.20 : x
  2. Step 2: Convert to fraction form
    466.34/643.59 = 267.20/x
  3. Step 3: Cross multiply
    466.34x = 643.59 × 267.20
  4. Step 4: Simplify right side
    466.34x = 171,966.44
  5. Step 5: Solve for x
    x = 171,966.44/466.34
  6. Step 6: Final answer
    x = 368.76

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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.