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Finding the Fourth Proportional to 965.05, 1,446.59 and 379.67

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Solution

The fourth proportional to 965.05, 1,446.59 and 379.67 is: 569.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    965.05 : 1,446.59 = 379.67 : x
  2. Step 2: Convert to fraction form
    965.05/1,446.59 = 379.67/x
  3. Step 3: Cross multiply
    965.05x = 1,446.59 × 379.67
  4. Step 4: Simplify right side
    965.05x = 549,220.54
  5. Step 5: Solve for x
    x = 549,220.54/965.05
  6. Step 6: Final answer
    x = 569.11

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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.