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Finding the Fourth Proportional to 1,169.77, 1,755.22 and 476.91

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Solution

The fourth proportional to 1,169.77, 1,755.22 and 476.91 is: 715.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,169.77 : 1,755.22 = 476.91 : x
  2. Step 2: Convert to fraction form
    1,169.77/1,755.22 = 476.91/x
  3. Step 3: Cross multiply
    1,169.77x = 1,755.22 × 476.91
  4. Step 4: Simplify right side
    1,169.77x = 837,081.97
  5. Step 5: Solve for x
    x = 837,081.97/1,169.77
  6. Step 6: Final answer
    x = 715.60

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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.