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Finding the Fourth Proportional to 889.76, 1,332 and 734.96

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Solution

The fourth proportional to 889.76, 1,332 and 734.96 is: 1,100.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    889.76 : 1,332 = 734.96 : x
  2. Step 2: Convert to fraction form
    889.76/1,332 = 734.96/x
  3. Step 3: Cross multiply
    889.76x = 1,332 × 734.96
  4. Step 4: Simplify right side
    889.76x = 978,966.72
  5. Step 5: Solve for x
    x = 978,966.72/889.76
  6. Step 6: Final answer
    x = 1,100.26

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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.