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Finding the Fourth Proportional to 964.42, 1,446.83 and 314.98

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Solution

The fourth proportional to 964.42, 1,446.83 and 314.98 is: 472.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    964.42 : 1,446.83 = 314.98 : x
  2. Step 2: Convert to fraction form
    964.42/1,446.83 = 314.98/x
  3. Step 3: Cross multiply
    964.42x = 1,446.83 × 314.98
  4. Step 4: Simplify right side
    964.42x = 455,720.94
  5. Step 5: Solve for x
    x = 455,720.94/964.42
  6. Step 6: Final answer
    x = 472.53

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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.