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Finding the Fourth Proportional to 466.84, 644.34 and 389.08

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Solution

The fourth proportional to 466.84, 644.34 and 389.08 is: 537.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    466.84 : 644.34 = 389.08 : x
  2. Step 2: Convert to fraction form
    466.84/644.34 = 389.08/x
  3. Step 3: Cross multiply
    466.84x = 644.34 × 389.08
  4. Step 4: Simplify right side
    466.84x = 250,699.81
  5. Step 5: Solve for x
    x = 250,699.81/466.84
  6. Step 6: Final answer
    x = 537.01

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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.