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Finding the Fourth Proportional to 1,101.35, 1,519.82 and 603.98

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Solution

The fourth proportional to 1,101.35, 1,519.82 and 603.98 is: 833.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,101.35 : 1,519.82 = 603.98 : x
  2. Step 2: Convert to fraction form
    1,101.35/1,519.82 = 603.98/x
  3. Step 3: Cross multiply
    1,101.35x = 1,519.82 × 603.98
  4. Step 4: Simplify right side
    1,101.35x = 917,946.19
  5. Step 5: Solve for x
    x = 917,946.19/1,101.35
  6. Step 6: Final answer
    x = 833.48

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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.