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Finding the Fourth Proportional to 467.30, 644.36 and 384.14

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Solution

The fourth proportional to 467.30, 644.36 and 384.14 is: 529.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    467.30 : 644.36 = 384.14 : x
  2. Step 2: Convert to fraction form
    467.30/644.36 = 384.14/x
  3. Step 3: Cross multiply
    467.30x = 644.36 × 384.14
  4. Step 4: Simplify right side
    467.30x = 247,524.45
  5. Step 5: Solve for x
    x = 247,524.45/467.30
  6. Step 6: Final answer
    x = 529.69

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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.