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Finding the Fourth Proportional to 465.82, 643.02 and 300.24

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Solution

The fourth proportional to 465.82, 643.02 and 300.24 is: 414.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    465.82 : 643.02 = 300.24 : x
  2. Step 2: Convert to fraction form
    465.82/643.02 = 300.24/x
  3. Step 3: Cross multiply
    465.82x = 643.02 × 300.24
  4. Step 4: Simplify right side
    465.82x = 193,060.32
  5. Step 5: Solve for x
    x = 193,060.32/465.82
  6. Step 6: Final answer
    x = 414.45

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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.