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Finding the Fourth Proportional to 1,239.94, 1,860.21 and 362.44

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Solution

The fourth proportional to 1,239.94, 1,860.21 and 362.44 is: 543.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239.94 : 1,860.21 = 362.44 : x
  2. Step 2: Convert to fraction form
    1,239.94/1,860.21 = 362.44/x
  3. Step 3: Cross multiply
    1,239.94x = 1,860.21 × 362.44
  4. Step 4: Simplify right side
    1,239.94x = 674,214.51
  5. Step 5: Solve for x
    x = 674,214.51/1,239.94
  6. Step 6: Final answer
    x = 543.75

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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.