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Finding the Fourth Proportional to 889.12, 1,334.03 and 368.99

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Solution

The fourth proportional to 889.12, 1,334.03 and 368.99 is: 553.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    889.12 : 1,334.03 = 368.99 : x
  2. Step 2: Convert to fraction form
    889.12/1,334.03 = 368.99/x
  3. Step 3: Cross multiply
    889.12x = 1,334.03 × 368.99
  4. Step 4: Simplify right side
    889.12x = 492,240.22
  5. Step 5: Solve for x
    x = 492,240.22/889.12
  6. Step 6: Final answer
    x = 553.63

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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.