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Finding the Fourth Proportional to 889.05, 1,331.74 and 848.95

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Solution

The fourth proportional to 889.05, 1,331.74 and 848.95 is: 1,271.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    889.05 : 1,331.74 = 848.95 : x
  2. Step 2: Convert to fraction form
    889.05/1,331.74 = 848.95/x
  3. Step 3: Cross multiply
    889.05x = 1,331.74 × 848.95
  4. Step 4: Simplify right side
    889.05x = 1,130,580.67
  5. Step 5: Solve for x
    x = 1,130,580.67/889.05
  6. Step 6: Final answer
    x = 1,271.67

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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.