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Finding the Fourth Proportional to 897.38, 1,344.63 and 863.67

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Solution

The fourth proportional to 897.38, 1,344.63 and 863.67 is: 1,294.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    897.38 : 1,344.63 = 863.67 : x
  2. Step 2: Convert to fraction form
    897.38/1,344.63 = 863.67/x
  3. Step 3: Cross multiply
    897.38x = 1,344.63 × 863.67
  4. Step 4: Simplify right side
    897.38x = 1,161,316.59
  5. Step 5: Solve for x
    x = 1,161,316.59/897.38
  6. Step 6: Final answer
    x = 1,294.12

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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.