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Finding the Fourth Proportional to 465.98, 699.12 and 141.36

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Solution

The fourth proportional to 465.98, 699.12 and 141.36 is: 212.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    465.98 : 699.12 = 141.36 : x
  2. Step 2: Convert to fraction form
    465.98/699.12 = 141.36/x
  3. Step 3: Cross multiply
    465.98x = 699.12 × 141.36
  4. Step 4: Simplify right side
    465.98x = 98,827.60
  5. Step 5: Solve for x
    x = 98,827.60/465.98
  6. Step 6: Final answer
    x = 212.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.