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Finding the Fourth Proportional to 783.66, 1,175.22 and 296.68

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Solution

The fourth proportional to 783.66, 1,175.22 and 296.68 is: 444.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    783.66 : 1,175.22 = 296.68 : x
  2. Step 2: Convert to fraction form
    783.66/1,175.22 = 296.68/x
  3. Step 3: Cross multiply
    783.66x = 1,175.22 × 296.68
  4. Step 4: Simplify right side
    783.66x = 348,664.27
  5. Step 5: Solve for x
    x = 348,664.27/783.66
  6. Step 6: Final answer
    x = 444.92

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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.