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Finding the Fourth Proportional to 489.84, 675.54 and 365.80

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Solution

The fourth proportional to 489.84, 675.54 and 365.80 is: 504.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    489.84 : 675.54 = 365.80 : x
  2. Step 2: Convert to fraction form
    489.84/675.54 = 365.80/x
  3. Step 3: Cross multiply
    489.84x = 675.54 × 365.80
  4. Step 4: Simplify right side
    489.84x = 247,112.53
  5. Step 5: Solve for x
    x = 247,112.53/489.84
  6. Step 6: Final answer
    x = 504.48

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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.