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Finding the Fourth Proportional to 404.89, 558.33 and 247.54

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Solution

The fourth proportional to 404.89, 558.33 and 247.54 is: 341.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    404.89 : 558.33 = 247.54 : x
  2. Step 2: Convert to fraction form
    404.89/558.33 = 247.54/x
  3. Step 3: Cross multiply
    404.89x = 558.33 × 247.54
  4. Step 4: Simplify right side
    404.89x = 138,209.01
  5. Step 5: Solve for x
    x = 138,209.01/404.89
  6. Step 6: Final answer
    x = 341.35

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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.