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Finding the Fourth Proportional to 671.56, 1,007.34 and 528.04

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Solution

The fourth proportional to 671.56, 1,007.34 and 528.04 is: 792.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.56 : 1,007.34 = 528.04 : x
  2. Step 2: Convert to fraction form
    671.56/1,007.34 = 528.04/x
  3. Step 3: Cross multiply
    671.56x = 1,007.34 × 528.04
  4. Step 4: Simplify right side
    671.56x = 531,915.81
  5. Step 5: Solve for x
    x = 531,915.81/671.56
  6. Step 6: Final answer
    x = 792.06

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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.