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Finding the Fourth Proportional to 1,625.49, 2,243.21 and 917.48

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Solution

The fourth proportional to 1,625.49, 2,243.21 and 917.48 is: 1,266.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,625.49 : 2,243.21 = 917.48 : x
  2. Step 2: Convert to fraction form
    1,625.49/2,243.21 = 917.48/x
  3. Step 3: Cross multiply
    1,625.49x = 2,243.21 × 917.48
  4. Step 4: Simplify right side
    1,625.49x = 2,058,084.51
  5. Step 5: Solve for x
    x = 2,058,084.51/1,625.49
  6. Step 6: Final answer
    x = 1,266.13

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1.5x scale

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.