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Finding the Fourth Proportional to 1,933.61, 2,899.31 and 617.11

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Solution

The fourth proportional to 1,933.61, 2,899.31 and 617.11 is: 925.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,933.61 : 2,899.31 = 617.11 : x
  2. Step 2: Convert to fraction form
    1,933.61/2,899.31 = 617.11/x
  3. Step 3: Cross multiply
    1,933.61x = 2,899.31 × 617.11
  4. Step 4: Simplify right side
    1,933.61x = 1,789,193.19
  5. Step 5: Solve for x
    x = 1,789,193.19/1,933.61
  6. Step 6: Final answer
    x = 925.31

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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.