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Finding the Fourth Proportional to 1,133.92, 1,564.77 and 692.56

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Solution

The fourth proportional to 1,133.92, 1,564.77 and 692.56 is: 955.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,133.92 : 1,564.77 = 692.56 : x
  2. Step 2: Convert to fraction form
    1,133.92/1,564.77 = 692.56/x
  3. Step 3: Cross multiply
    1,133.92x = 1,564.77 × 692.56
  4. Step 4: Simplify right side
    1,133.92x = 1,083,697.11
  5. Step 5: Solve for x
    x = 1,083,697.11/1,133.92
  6. Step 6: Final answer
    x = 955.71

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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.