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Finding the Fourth Proportional to 1,176.22, 1,621.32 and 927.16

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Solution

The fourth proportional to 1,176.22, 1,621.32 and 927.16 is: 1,278.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,176.22 : 1,621.32 = 927.16 : x
  2. Step 2: Convert to fraction form
    1,176.22/1,621.32 = 927.16/x
  3. Step 3: Cross multiply
    1,176.22x = 1,621.32 × 927.16
  4. Step 4: Simplify right side
    1,176.22x = 1,503,223.05
  5. Step 5: Solve for x
    x = 1,503,223.05/1,176.22
  6. Step 6: Final answer
    x = 1,278.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.