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Finding the Fourth Proportional to 680.13, 1,018.02 and 367.32

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Solution

The fourth proportional to 680.13, 1,018.02 and 367.32 is: 549.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    680.13 : 1,018.02 = 367.32 : x
  2. Step 2: Convert to fraction form
    680.13/1,018.02 = 367.32/x
  3. Step 3: Cross multiply
    680.13x = 1,018.02 × 367.32
  4. Step 4: Simplify right side
    680.13x = 373,939.11
  5. Step 5: Solve for x
    x = 373,939.11/680.13
  6. Step 6: Final answer
    x = 549.81

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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.