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Finding the Fourth Proportional to 1,224.70, 1,837.05 and 403.10

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Solution

The fourth proportional to 1,224.70, 1,837.05 and 403.10 is: 604.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224.70 : 1,837.05 = 403.10 : x
  2. Step 2: Convert to fraction form
    1,224.70/1,837.05 = 403.10/x
  3. Step 3: Cross multiply
    1,224.70x = 1,837.05 × 403.10
  4. Step 4: Simplify right side
    1,224.70x = 740,514.86
  5. Step 5: Solve for x
    x = 740,514.86/1,224.70
  6. Step 6: Final answer
    x = 604.65

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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.