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Finding the Fourth Proportional to 1,103.46, 1,648.04 and 949.74

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Solution

The fourth proportional to 1,103.46, 1,648.04 and 949.74 is: 1,418.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,103.46 : 1,648.04 = 949.74 : x
  2. Step 2: Convert to fraction form
    1,103.46/1,648.04 = 949.74/x
  3. Step 3: Cross multiply
    1,103.46x = 1,648.04 × 949.74
  4. Step 4: Simplify right side
    1,103.46x = 1,565,204.76
  5. Step 5: Solve for x
    x = 1,565,204.76/1,103.46
  6. Step 6: Final answer
    x = 1,418.45

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.