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Finding the Fourth Proportional to 2,466.50, 3,699.75 and 642.50

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Solution

The fourth proportional to 2,466.50, 3,699.75 and 642.50 is: 963.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,466.50 : 3,699.75 = 642.50 : x
  2. Step 2: Convert to fraction form
    2,466.50/3,699.75 = 642.50/x
  3. Step 3: Cross multiply
    2,466.50x = 3,699.75 × 642.50
  4. Step 4: Simplify right side
    2,466.50x = 2,377,089.38
  5. Step 5: Solve for x
    x = 2,377,089.38/2,466.50
  6. Step 6: Final answer
    x = 963.75

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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.