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Finding the Fourth Proportional to 949.45, 1,424.55 and 300.24

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Solution

The fourth proportional to 949.45, 1,424.55 and 300.24 is: 450.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    949.45 : 1,424.55 = 300.24 : x
  2. Step 2: Convert to fraction form
    949.45/1,424.55 = 300.24/x
  3. Step 3: Cross multiply
    949.45x = 1,424.55 × 300.24
  4. Step 4: Simplify right side
    949.45x = 427,706.89
  5. Step 5: Solve for x
    x = 427,706.89/949.45
  6. Step 6: Final answer
    x = 450.48

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1.5x scale

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.