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Finding the Fourth Proportional to 889.65, 1,334.33 and 341.55

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Solution

The fourth proportional to 889.65, 1,334.33 and 341.55 is: 512.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    889.65 : 1,334.33 = 341.55 : x
  2. Step 2: Convert to fraction form
    889.65/1,334.33 = 341.55/x
  3. Step 3: Cross multiply
    889.65x = 1,334.33 × 341.55
  4. Step 4: Simplify right side
    889.65x = 455,744.99
  5. Step 5: Solve for x
    x = 455,744.99/889.65
  6. Step 6: Final answer
    x = 512.27

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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.