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Finding the Fourth Proportional to 1,176.51, 1,623.53 and 679.16

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Solution

The fourth proportional to 1,176.51, 1,623.53 and 679.16 is: 937.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,176.51 : 1,623.53 = 679.16 : x
  2. Step 2: Convert to fraction form
    1,176.51/1,623.53 = 679.16/x
  3. Step 3: Cross multiply
    1,176.51x = 1,623.53 × 679.16
  4. Step 4: Simplify right side
    1,176.51x = 1,102,625.12
  5. Step 5: Solve for x
    x = 1,102,625.12/1,176.51
  6. Step 6: Final answer
    x = 937.20

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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.