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Finding the Fourth Proportional to 455.43, 679.14 and 451.32

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Solution

The fourth proportional to 455.43, 679.14 and 451.32 is: 673.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    455.43 : 679.14 = 451.32 : x
  2. Step 2: Convert to fraction form
    455.43/679.14 = 451.32/x
  3. Step 3: Cross multiply
    455.43x = 679.14 × 451.32
  4. Step 4: Simplify right side
    455.43x = 306,506.92
  5. Step 5: Solve for x
    x = 306,506.92/455.43
  6. Step 6: Final answer
    x = 673.00

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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.