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Finding the Fourth Proportional to 1,135.99, 1,561.01 and 925.73

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Solution

The fourth proportional to 1,135.99, 1,561.01 and 925.73 is: 1,272.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,135.99 : 1,561.01 = 925.73 : x
  2. Step 2: Convert to fraction form
    1,135.99/1,561.01 = 925.73/x
  3. Step 3: Cross multiply
    1,135.99x = 1,561.01 × 925.73
  4. Step 4: Simplify right side
    1,135.99x = 1,445,067.21
  5. Step 5: Solve for x
    x = 1,445,067.21/1,135.99
  6. Step 6: Final answer
    x = 1,272.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.