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Finding the Fourth Proportional to 889.25, 1,335.69 and 683.10

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Solution

The fourth proportional to 889.25, 1,335.69 and 683.10 is: 1,026.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    889.25 : 1,335.69 = 683.10 : x
  2. Step 2: Convert to fraction form
    889.25/1,335.69 = 683.10/x
  3. Step 3: Cross multiply
    889.25x = 1,335.69 × 683.10
  4. Step 4: Simplify right side
    889.25x = 912,409.84
  5. Step 5: Solve for x
    x = 912,409.84/889.25
  6. Step 6: Final answer
    x = 1,026.05

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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.