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Finding the Fourth Proportional to 1,223.99, 1,835.98 and 402.26

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Solution

The fourth proportional to 1,223.99, 1,835.98 and 402.26 is: 603.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223.99 : 1,835.98 = 402.26 : x
  2. Step 2: Convert to fraction form
    1,223.99/1,835.98 = 402.26/x
  3. Step 3: Cross multiply
    1,223.99x = 1,835.98 × 402.26
  4. Step 4: Simplify right side
    1,223.99x = 738,531.13
  5. Step 5: Solve for x
    x = 738,531.13/1,223.99
  6. Step 6: Final answer
    x = 603.38

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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.