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Finding the Fourth Proportional to 1,176.76, 1,623.47 and 757.06

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Solution

The fourth proportional to 1,176.76, 1,623.47 and 757.06 is: 1,044.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,176.76 : 1,623.47 = 757.06 : x
  2. Step 2: Convert to fraction form
    1,176.76/1,623.47 = 757.06/x
  3. Step 3: Cross multiply
    1,176.76x = 1,623.47 × 757.06
  4. Step 4: Simplify right side
    1,176.76x = 1,229,064.20
  5. Step 5: Solve for x
    x = 1,229,064.20/1,176.76
  6. Step 6: Final answer
    x = 1,044.45

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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.