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Finding the Fourth Proportional to 1,106.85, 1,527.77 and 775.37

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Solution

The fourth proportional to 1,106.85, 1,527.77 and 775.37 is: 1,070.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,106.85 : 1,527.77 = 775.37 : x
  2. Step 2: Convert to fraction form
    1,106.85/1,527.77 = 775.37/x
  3. Step 3: Cross multiply
    1,106.85x = 1,527.77 × 775.37
  4. Step 4: Simplify right side
    1,106.85x = 1,184,575.51
  5. Step 5: Solve for x
    x = 1,184,575.51/1,106.85
  6. Step 6: Final answer
    x = 1,070.22

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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.