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Finding the Fourth Proportional to 776.76, 1,164.18 and 365.34

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Solution

The fourth proportional to 776.76, 1,164.18 and 365.34 is: 547.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    776.76 : 1,164.18 = 365.34 : x
  2. Step 2: Convert to fraction form
    776.76/1,164.18 = 365.34/x
  3. Step 3: Cross multiply
    776.76x = 1,164.18 × 365.34
  4. Step 4: Simplify right side
    776.76x = 425,321.52
  5. Step 5: Solve for x
    x = 425,321.52/776.76
  6. Step 6: Final answer
    x = 547.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.