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Finding the Fourth Proportional to 1,041.99, 1,555.38 and 910.62

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Solution

The fourth proportional to 1,041.99, 1,555.38 and 910.62 is: 1,359.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,041.99 : 1,555.38 = 910.62 : x
  2. Step 2: Convert to fraction form
    1,041.99/1,555.38 = 910.62/x
  3. Step 3: Cross multiply
    1,041.99x = 1,555.38 × 910.62
  4. Step 4: Simplify right side
    1,041.99x = 1,416,361.75
  5. Step 5: Solve for x
    x = 1,416,361.75/1,041.99
  6. Step 6: Final answer
    x = 1,359.29

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.