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Finding the Fourth Proportional to 453.50, 679.35 and 404.90

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Solution

The fourth proportional to 453.50, 679.35 and 404.90 is: 606.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.50 : 679.35 = 404.90 : x
  2. Step 2: Convert to fraction form
    453.50/679.35 = 404.90/x
  3. Step 3: Cross multiply
    453.50x = 679.35 × 404.90
  4. Step 4: Simplify right side
    453.50x = 275,068.82
  5. Step 5: Solve for x
    x = 275,068.82/453.50
  6. Step 6: Final answer
    x = 606.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.