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Finding the Fourth Proportional to 953.38, 1,429.80 and 303.94

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Solution

The fourth proportional to 953.38, 1,429.80 and 303.94 is: 455.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    953.38 : 1,429.80 = 303.94 : x
  2. Step 2: Convert to fraction form
    953.38/1,429.80 = 303.94/x
  3. Step 3: Cross multiply
    953.38x = 1,429.80 × 303.94
  4. Step 4: Simplify right side
    953.38x = 434,573.41
  5. Step 5: Solve for x
    x = 434,573.41/953.38
  6. Step 6: Final answer
    x = 455.82

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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.