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Finding the Fourth Proportional to 483.76, 666.48 and 397

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Solution

The fourth proportional to 483.76, 666.48 and 397 is: 546.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.76 : 666.48 = 397 : x
  2. Step 2: Convert to fraction form
    483.76/666.48 = 397/x
  3. Step 3: Cross multiply
    483.76x = 666.48 × 397
  4. Step 4: Simplify right side
    483.76x = 264,592.56
  5. Step 5: Solve for x
    x = 264,592.56/483.76
  6. Step 6: Final answer
    x = 546.95

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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.