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Finding the Fourth Proportional to 682.65, 1,021.55 and 466.38

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Solution

The fourth proportional to 682.65, 1,021.55 and 466.38 is: 697.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    682.65 : 1,021.55 = 466.38 : x
  2. Step 2: Convert to fraction form
    682.65/1,021.55 = 466.38/x
  3. Step 3: Cross multiply
    682.65x = 1,021.55 × 466.38
  4. Step 4: Simplify right side
    682.65x = 476,428.16
  5. Step 5: Solve for x
    x = 476,428.16/682.65
  6. Step 6: Final answer
    x = 697.91

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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.