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Finding the Fourth Proportional to 1,427.25, 2,141.03 and 503.35

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Solution

The fourth proportional to 1,427.25, 2,141.03 and 503.35 is: 755.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427.25 : 2,141.03 = 503.35 : x
  2. Step 2: Convert to fraction form
    1,427.25/2,141.03 = 503.35/x
  3. Step 3: Cross multiply
    1,427.25x = 2,141.03 × 503.35
  4. Step 4: Simplify right side
    1,427.25x = 1,077,683.36
  5. Step 5: Solve for x
    x = 1,077,683.36/1,427.25
  6. Step 6: Final answer
    x = 755.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.