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Finding the Fourth Proportional to 483.17, 666.58 and 378.07

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Solution

The fourth proportional to 483.17, 666.58 and 378.07 is: 521.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.17 : 666.58 = 378.07 : x
  2. Step 2: Convert to fraction form
    483.17/666.58 = 378.07/x
  3. Step 3: Cross multiply
    483.17x = 666.58 × 378.07
  4. Step 4: Simplify right side
    483.17x = 252,012.00
  5. Step 5: Solve for x
    x = 252,012.00/483.17
  6. Step 6: Final answer
    x = 521.59

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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.