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Finding the Fourth Proportional to 1,177.61, 1,764.02 and 945.24

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Solution

The fourth proportional to 1,177.61, 1,764.02 and 945.24 is: 1,415.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,177.61 : 1,764.02 = 945.24 : x
  2. Step 2: Convert to fraction form
    1,177.61/1,764.02 = 945.24/x
  3. Step 3: Cross multiply
    1,177.61x = 1,764.02 × 945.24
  4. Step 4: Simplify right side
    1,177.61x = 1,667,431.24
  5. Step 5: Solve for x
    x = 1,667,431.24/1,177.61
  6. Step 6: Final answer
    x = 1,415.94

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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.