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Finding the Fourth Proportional to 969.50, 1,454.06 and 320.15

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Solution

The fourth proportional to 969.50, 1,454.06 and 320.15 is: 480.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    969.50 : 1,454.06 = 320.15 : x
  2. Step 2: Convert to fraction form
    969.50/1,454.06 = 320.15/x
  3. Step 3: Cross multiply
    969.50x = 1,454.06 × 320.15
  4. Step 4: Simplify right side
    969.50x = 465,508.44
  5. Step 5: Solve for x
    x = 465,508.44/969.50
  6. Step 6: Final answer
    x = 480.16

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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.