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Finding the Fourth Proportional to 1,435.03, 1,980.48 and 845.75

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Solution

The fourth proportional to 1,435.03, 1,980.48 and 845.75 is: 1,167.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,435.03 : 1,980.48 = 845.75 : x
  2. Step 2: Convert to fraction form
    1,435.03/1,980.48 = 845.75/x
  3. Step 3: Cross multiply
    1,435.03x = 1,980.48 × 845.75
  4. Step 4: Simplify right side
    1,435.03x = 1,674,999.08
  5. Step 5: Solve for x
    x = 1,674,999.08/1,435.03
  6. Step 6: Final answer
    x = 1,167.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.