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Finding the Fourth Proportional to 967.45, 1,449.31 and 577.76

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Solution

The fourth proportional to 967.45, 1,449.31 and 577.76 is: 865.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    967.45 : 1,449.31 = 577.76 : x
  2. Step 2: Convert to fraction form
    967.45/1,449.31 = 577.76/x
  3. Step 3: Cross multiply
    967.45x = 1,449.31 × 577.76
  4. Step 4: Simplify right side
    967.45x = 837,353.35
  5. Step 5: Solve for x
    x = 837,353.35/967.45
  6. Step 6: Final answer
    x = 865.53

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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.