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Finding the Fourth Proportional to 671.52, 1,009.26 and 653.34

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Solution

The fourth proportional to 671.52, 1,009.26 and 653.34 is: 981.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.52 : 1,009.26 = 653.34 : x
  2. Step 2: Convert to fraction form
    671.52/1,009.26 = 653.34/x
  3. Step 3: Cross multiply
    671.52x = 1,009.26 × 653.34
  4. Step 4: Simplify right side
    671.52x = 659,389.93
  5. Step 5: Solve for x
    x = 659,389.93/671.52
  6. Step 6: Final answer
    x = 981.94

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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.