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Finding the Fourth Proportional to 467.42, 644.69 and 446.74

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Solution

The fourth proportional to 467.42, 644.69 and 446.74 is: 616.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    467.42 : 644.69 = 446.74 : x
  2. Step 2: Convert to fraction form
    467.42/644.69 = 446.74/x
  3. Step 3: Cross multiply
    467.42x = 644.69 × 446.74
  4. Step 4: Simplify right side
    467.42x = 288,008.81
  5. Step 5: Solve for x
    x = 288,008.81/467.42
  6. Step 6: Final answer
    x = 616.17

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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.