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Finding the Fourth Proportional to 1,809.32, 2,712.32 and 654.26

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Solution

The fourth proportional to 1,809.32, 2,712.32 and 654.26 is: 980.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,809.32 : 2,712.32 = 654.26 : x
  2. Step 2: Convert to fraction form
    1,809.32/2,712.32 = 654.26/x
  3. Step 3: Cross multiply
    1,809.32x = 2,712.32 × 654.26
  4. Step 4: Simplify right side
    1,809.32x = 1,774,562.48
  5. Step 5: Solve for x
    x = 1,774,562.48/1,809.32
  6. Step 6: Final answer
    x = 980.79

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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.