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Finding the Fourth Proportional to 466.77, 644.27 and 319.35

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Solution

The fourth proportional to 466.77, 644.27 and 319.35 is: 440.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    466.77 : 644.27 = 319.35 : x
  2. Step 2: Convert to fraction form
    466.77/644.27 = 319.35/x
  3. Step 3: Cross multiply
    466.77x = 644.27 × 319.35
  4. Step 4: Simplify right side
    466.77x = 205,746.03
  5. Step 5: Solve for x
    x = 205,746.03/466.77
  6. Step 6: Final answer
    x = 440.79

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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.