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Finding the Fourth Proportional to 489.67, 675.73 and 265.60

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Solution

The fourth proportional to 489.67, 675.73 and 265.60 is: 366.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    489.67 : 675.73 = 265.60 : x
  2. Step 2: Convert to fraction form
    489.67/675.73 = 265.60/x
  3. Step 3: Cross multiply
    489.67x = 675.73 × 265.60
  4. Step 4: Simplify right side
    489.67x = 179,474.86
  5. Step 5: Solve for x
    x = 179,474.86/489.67
  6. Step 6: Final answer
    x = 366.52

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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.