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Finding the Fourth Proportional to 1,482.30, 2,046 and 1,040.31

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Solution

The fourth proportional to 1,482.30, 2,046 and 1,040.31 is: 1,435.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,482.30 : 2,046 = 1,040.31 : x
  2. Step 2: Convert to fraction form
    1,482.30/2,046 = 1,040.31/x
  3. Step 3: Cross multiply
    1,482.30x = 2,046 × 1,040.31
  4. Step 4: Simplify right side
    1,482.30x = 2,128,474.26
  5. Step 5: Solve for x
    x = 2,128,474.26/1,482.30
  6. Step 6: Final answer
    x = 1,435.93

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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.