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Finding the Fourth Proportional to 969.91, 1,454.97 and 353.47

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Solution

The fourth proportional to 969.91, 1,454.97 and 353.47 is: 530.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    969.91 : 1,454.97 = 353.47 : x
  2. Step 2: Convert to fraction form
    969.91/1,454.97 = 353.47/x
  3. Step 3: Cross multiply
    969.91x = 1,454.97 × 353.47
  4. Step 4: Simplify right side
    969.91x = 514,288.25
  5. Step 5: Solve for x
    x = 514,288.25/969.91
  6. Step 6: Final answer
    x = 530.24

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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.