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Finding the Fourth Proportional to 1,322.50, 1,825.76 and 903.48

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Solution

The fourth proportional to 1,322.50, 1,825.76 and 903.48 is: 1,247.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,322.50 : 1,825.76 = 903.48 : x
  2. Step 2: Convert to fraction form
    1,322.50/1,825.76 = 903.48/x
  3. Step 3: Cross multiply
    1,322.50x = 1,825.76 × 903.48
  4. Step 4: Simplify right side
    1,322.50x = 1,649,537.64
  5. Step 5: Solve for x
    x = 1,649,537.64/1,322.50
  6. Step 6: Final answer
    x = 1,247.29

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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.