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Finding the Fourth Proportional to 467.01, 644.27 and 289.93

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Solution

The fourth proportional to 467.01, 644.27 and 289.93 is: 399.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    467.01 : 644.27 = 289.93 : x
  2. Step 2: Convert to fraction form
    467.01/644.27 = 289.93/x
  3. Step 3: Cross multiply
    467.01x = 644.27 × 289.93
  4. Step 4: Simplify right side
    467.01x = 186,793.20
  5. Step 5: Solve for x
    x = 186,793.20/467.01
  6. Step 6: Final answer
    x = 399.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.