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Finding the Fourth Proportional to 1,176.45, 1,765.14 and 560.43

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Solution

The fourth proportional to 1,176.45, 1,765.14 and 560.43 is: 840.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,176.45 : 1,765.14 = 560.43 : x
  2. Step 2: Convert to fraction form
    1,176.45/1,765.14 = 560.43/x
  3. Step 3: Cross multiply
    1,176.45x = 1,765.14 × 560.43
  4. Step 4: Simplify right side
    1,176.45x = 989,237.41
  5. Step 5: Solve for x
    x = 989,237.41/1,176.45
  6. Step 6: Final answer
    x = 840.87

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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.