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Finding the Fourth Proportional to 1,173.38, 1,618.87 and 676.01

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Solution

The fourth proportional to 1,173.38, 1,618.87 and 676.01 is: 932.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,173.38 : 1,618.87 = 676.01 : x
  2. Step 2: Convert to fraction form
    1,173.38/1,618.87 = 676.01/x
  3. Step 3: Cross multiply
    1,173.38x = 1,618.87 × 676.01
  4. Step 4: Simplify right side
    1,173.38x = 1,094,360.83
  5. Step 5: Solve for x
    x = 1,094,360.83/1,173.38
  6. Step 6: Final answer
    x = 932.66

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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.