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Finding the Fourth Proportional to 893.53, 1,340.34 and 528.13

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Solution

The fourth proportional to 893.53, 1,340.34 and 528.13 is: 792.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.53 : 1,340.34 = 528.13 : x
  2. Step 2: Convert to fraction form
    893.53/1,340.34 = 528.13/x
  3. Step 3: Cross multiply
    893.53x = 1,340.34 × 528.13
  4. Step 4: Simplify right side
    893.53x = 707,873.76
  5. Step 5: Solve for x
    x = 707,873.76/893.53
  6. Step 6: Final answer
    x = 792.22

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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.