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Finding the Fourth Proportional to 466.00, 643.10 and 256.19

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Solution

The fourth proportional to 466.00, 643.10 and 256.19 is: 353.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    466.00 : 643.10 = 256.19 : x
  2. Step 2: Convert to fraction form
    466.00/643.10 = 256.19/x
  3. Step 3: Cross multiply
    466.00x = 643.10 × 256.19
  4. Step 4: Simplify right side
    466.00x = 164,755.36
  5. Step 5: Solve for x
    x = 164,755.36/466.00
  6. Step 6: Final answer
    x = 353.55

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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.