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Finding the Fourth Proportional to 1,625.48, 2,243.16 and 917.48

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Solution

The fourth proportional to 1,625.48, 2,243.16 and 917.48 is: 1,266.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,625.48 : 2,243.16 = 917.48 : x
  2. Step 2: Convert to fraction form
    1,625.48/2,243.16 = 917.48/x
  3. Step 3: Cross multiply
    1,625.48x = 2,243.16 × 917.48
  4. Step 4: Simplify right side
    1,625.48x = 2,058,047.52
  5. Step 5: Solve for x
    x = 2,058,047.52/1,625.48
  6. Step 6: Final answer
    x = 1,266.11

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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.