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Finding the Fourth Proportional to 2,430.33, 3,647.26 and 969.90

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Solution

The fourth proportional to 2,430.33, 3,647.26 and 969.90 is: 1,455.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,430.33 : 3,647.26 = 969.90 : x
  2. Step 2: Convert to fraction form
    2,430.33/3,647.26 = 969.90/x
  3. Step 3: Cross multiply
    2,430.33x = 3,647.26 × 969.90
  4. Step 4: Simplify right side
    2,430.33x = 3,537,477.47
  5. Step 5: Solve for x
    x = 3,537,477.47/2,430.33
  6. Step 6: Final answer
    x = 1,455.55

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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.