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Finding the Fourth Proportional to 761.81, 1,142.73 and 184.69

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Solution

The fourth proportional to 761.81, 1,142.73 and 184.69 is: 277.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    761.81 : 1,142.73 = 184.69 : x
  2. Step 2: Convert to fraction form
    761.81/1,142.73 = 184.69/x
  3. Step 3: Cross multiply
    761.81x = 1,142.73 × 184.69
  4. Step 4: Simplify right side
    761.81x = 211,047.02
  5. Step 5: Solve for x
    x = 211,047.02/761.81
  6. Step 6: Final answer
    x = 277.03

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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.