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Finding the Fourth Proportional to 1,103.79, 1,523.25 and 606.45

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Solution

The fourth proportional to 1,103.79, 1,523.25 and 606.45 is: 836.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,103.79 : 1,523.25 = 606.45 : x
  2. Step 2: Convert to fraction form
    1,103.79/1,523.25 = 606.45/x
  3. Step 3: Cross multiply
    1,103.79x = 1,523.25 × 606.45
  4. Step 4: Simplify right side
    1,103.79x = 923,774.96
  5. Step 5: Solve for x
    x = 923,774.96/1,103.79
  6. Step 6: Final answer
    x = 836.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.