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Finding the Fourth Proportional to 1,326.45, 1,828.60 and 953.31

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Solution

The fourth proportional to 1,326.45, 1,828.60 and 953.31 is: 1,314.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326.45 : 1,828.60 = 953.31 : x
  2. Step 2: Convert to fraction form
    1,326.45/1,828.60 = 953.31/x
  3. Step 3: Cross multiply
    1,326.45x = 1,828.60 × 953.31
  4. Step 4: Simplify right side
    1,326.45x = 1,743,222.67
  5. Step 5: Solve for x
    x = 1,743,222.67/1,326.45
  6. Step 6: Final answer
    x = 1,314.20

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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.