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Finding the Fourth Proportional to 455.56, 679.40 and 444.52

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Solution

The fourth proportional to 455.56, 679.40 and 444.52 is: 662.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    455.56 : 679.40 = 444.52 : x
  2. Step 2: Convert to fraction form
    455.56/679.40 = 444.52/x
  3. Step 3: Cross multiply
    455.56x = 679.40 × 444.52
  4. Step 4: Simplify right side
    455.56x = 302,006.89
  5. Step 5: Solve for x
    x = 302,006.89/455.56
  6. Step 6: Final answer
    x = 662.94

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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.