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Finding the Fourth Proportional to 1,471.18, 2,030.22 and 808.06

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Solution

The fourth proportional to 1,471.18, 2,030.22 and 808.06 is: 1,115.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,471.18 : 2,030.22 = 808.06 : x
  2. Step 2: Convert to fraction form
    1,471.18/2,030.22 = 808.06/x
  3. Step 3: Cross multiply
    1,471.18x = 2,030.22 × 808.06
  4. Step 4: Simplify right side
    1,471.18x = 1,640,539.57
  5. Step 5: Solve for x
    x = 1,640,539.57/1,471.18
  6. Step 6: Final answer
    x = 1,115.12

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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.