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Finding the Fourth Proportional to 893.64, 1,337.82 and 527.40

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Solution

The fourth proportional to 893.64, 1,337.82 and 527.40 is: 789.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.64 : 1,337.82 = 527.40 : x
  2. Step 2: Convert to fraction form
    893.64/1,337.82 = 527.40/x
  3. Step 3: Cross multiply
    893.64x = 1,337.82 × 527.40
  4. Step 4: Simplify right side
    893.64x = 705,566.27
  5. Step 5: Solve for x
    x = 705,566.27/893.64
  6. Step 6: Final answer
    x = 789.54

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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.