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Finding the Fourth Proportional to 454.90, 678.01 and 441.70

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Solution

The fourth proportional to 454.90, 678.01 and 441.70 is: 658.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.90 : 678.01 = 441.70 : x
  2. Step 2: Convert to fraction form
    454.90/678.01 = 441.70/x
  3. Step 3: Cross multiply
    454.90x = 678.01 × 441.70
  4. Step 4: Simplify right side
    454.90x = 299,477.02
  5. Step 5: Solve for x
    x = 299,477.02/454.90
  6. Step 6: Final answer
    x = 658.34

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.