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Finding the Fourth Proportional to 893.18, 1,337.92 and 697.96

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Solution

The fourth proportional to 893.18, 1,337.92 and 697.96 is: 1,045.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.18 : 1,337.92 = 697.96 : x
  2. Step 2: Convert to fraction form
    893.18/1,337.92 = 697.96/x
  3. Step 3: Cross multiply
    893.18x = 1,337.92 × 697.96
  4. Step 4: Simplify right side
    893.18x = 933,814.64
  5. Step 5: Solve for x
    x = 933,814.64/893.18
  6. Step 6: Final answer
    x = 1,045.49

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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.