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Finding the Fourth Proportional to 1,135.05, 1,696.78 and 1,017.66

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Solution

The fourth proportional to 1,135.05, 1,696.78 and 1,017.66 is: 1,521.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,135.05 : 1,696.78 = 1,017.66 : x
  2. Step 2: Convert to fraction form
    1,135.05/1,696.78 = 1,017.66/x
  3. Step 3: Cross multiply
    1,135.05x = 1,696.78 × 1,017.66
  4. Step 4: Simplify right side
    1,135.05x = 1,726,752.77
  5. Step 5: Solve for x
    x = 1,726,752.77/1,135.05
  6. Step 6: Final answer
    x = 1,521.31

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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.