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Finding the Fourth Proportional to 1,225.42, 1,837.76 and 403.49

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Solution

The fourth proportional to 1,225.42, 1,837.76 and 403.49 is: 605.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225.42 : 1,837.76 = 403.49 : x
  2. Step 2: Convert to fraction form
    1,225.42/1,837.76 = 403.49/x
  3. Step 3: Cross multiply
    1,225.42x = 1,837.76 × 403.49
  4. Step 4: Simplify right side
    1,225.42x = 741,520.36
  5. Step 5: Solve for x
    x = 741,520.36/1,225.42
  6. Step 6: Final answer
    x = 605.12

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1.5x scale

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.