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Finding the Fourth Proportional to 589.70, 884.55 and 553.70

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Solution

The fourth proportional to 589.70, 884.55 and 553.70 is: 830.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    589.70 : 884.55 = 553.70 : x
  2. Step 2: Convert to fraction form
    589.70/884.55 = 553.70/x
  3. Step 3: Cross multiply
    589.70x = 884.55 × 553.70
  4. Step 4: Simplify right side
    589.70x = 489,775.34
  5. Step 5: Solve for x
    x = 489,775.34/589.70
  6. Step 6: Final answer
    x = 830.55

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.