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Finding the Fourth Proportional to 761.63, 1,142.44 and 184.50

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Solution

The fourth proportional to 761.63, 1,142.44 and 184.50 is: 276.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    761.63 : 1,142.44 = 184.50 : x
  2. Step 2: Convert to fraction form
    761.63/1,142.44 = 184.50/x
  3. Step 3: Cross multiply
    761.63x = 1,142.44 × 184.50
  4. Step 4: Simplify right side
    761.63x = 210,779.72
  5. Step 5: Solve for x
    x = 210,779.72/761.63
  6. Step 6: Final answer
    x = 276.75

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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.