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Finding the Fourth Proportional to 897.12, 1,343.25 and 736.74

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Solution

The fourth proportional to 897.12, 1,343.25 and 736.74 is: 1,103.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    897.12 : 1,343.25 = 736.74 : x
  2. Step 2: Convert to fraction form
    897.12/1,343.25 = 736.74/x
  3. Step 3: Cross multiply
    897.12x = 1,343.25 × 736.74
  4. Step 4: Simplify right side
    897.12x = 989,626.01
  5. Step 5: Solve for x
    x = 989,626.01/897.12
  6. Step 6: Final answer
    x = 1,103.11

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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.