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Finding the Fourth Proportional to 465.88, 643.80 and 341.68

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Solution

The fourth proportional to 465.88, 643.80 and 341.68 is: 472.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    465.88 : 643.80 = 341.68 : x
  2. Step 2: Convert to fraction form
    465.88/643.80 = 341.68/x
  3. Step 3: Cross multiply
    465.88x = 643.80 × 341.68
  4. Step 4: Simplify right side
    465.88x = 219,973.58
  5. Step 5: Solve for x
    x = 219,973.58/465.88
  6. Step 6: Final answer
    x = 472.17

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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.