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Finding the Fourth Proportional to 969.38, 1,337.96 and 576.63

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Solution

The fourth proportional to 969.38, 1,337.96 and 576.63 is: 795.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    969.38 : 1,337.96 = 576.63 : x
  2. Step 2: Convert to fraction form
    969.38/1,337.96 = 576.63/x
  3. Step 3: Cross multiply
    969.38x = 1,337.96 × 576.63
  4. Step 4: Simplify right side
    969.38x = 771,509.32
  5. Step 5: Solve for x
    x = 771,509.32/969.38
  6. Step 6: Final answer
    x = 795.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.