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Finding the Fourth Proportional to 1,505.57, 2,257.53 and 838.67

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Solution

The fourth proportional to 1,505.57, 2,257.53 and 838.67 is: 1,257.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,505.57 : 2,257.53 = 838.67 : x
  2. Step 2: Convert to fraction form
    1,505.57/2,257.53 = 838.67/x
  3. Step 3: Cross multiply
    1,505.57x = 2,257.53 × 838.67
  4. Step 4: Simplify right side
    1,505.57x = 1,893,316.96
  5. Step 5: Solve for x
    x = 1,893,316.96/1,505.57
  6. Step 6: Final answer
    x = 1,257.54

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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.