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Finding the Fourth Proportional to 552.83, 758.83 and 489.27

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Solution

The fourth proportional to 552.83, 758.83 and 489.27 is: 671.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    552.83 : 758.83 = 489.27 : x
  2. Step 2: Convert to fraction form
    552.83/758.83 = 489.27/x
  3. Step 3: Cross multiply
    552.83x = 758.83 × 489.27
  4. Step 4: Simplify right side
    552.83x = 371,271.53
  5. Step 5: Solve for x
    x = 371,271.53/552.83
  6. Step 6: Final answer
    x = 671.59

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.