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Finding the Fourth Proportional to 528.54, 789.06 and 404.48

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Solution

The fourth proportional to 528.54, 789.06 and 404.48 is: 603.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.54 : 789.06 = 404.48 : x
  2. Step 2: Convert to fraction form
    528.54/789.06 = 404.48/x
  3. Step 3: Cross multiply
    528.54x = 789.06 × 404.48
  4. Step 4: Simplify right side
    528.54x = 319,162.48
  5. Step 5: Solve for x
    x = 319,162.48/528.54
  6. Step 6: Final answer
    x = 603.86

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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.