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Finding the Fourth Proportional to 466.58, 643.66 and 270.05

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Solution

The fourth proportional to 466.58, 643.66 and 270.05 is: 372.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    466.58 : 643.66 = 270.05 : x
  2. Step 2: Convert to fraction form
    466.58/643.66 = 270.05/x
  3. Step 3: Cross multiply
    466.58x = 643.66 × 270.05
  4. Step 4: Simplify right side
    466.58x = 173,820.38
  5. Step 5: Solve for x
    x = 173,820.38/466.58
  6. Step 6: Final answer
    x = 372.54

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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.