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Finding the Fourth Proportional to 964.01, 1,444.80 and 415.64

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Solution

The fourth proportional to 964.01, 1,444.80 and 415.64 is: 622.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    964.01 : 1,444.80 = 415.64 : x
  2. Step 2: Convert to fraction form
    964.01/1,444.80 = 415.64/x
  3. Step 3: Cross multiply
    964.01x = 1,444.80 × 415.64
  4. Step 4: Simplify right side
    964.01x = 600,516.67
  5. Step 5: Solve for x
    x = 600,516.67/964.01
  6. Step 6: Final answer
    x = 622.94

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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.