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Finding the Fourth Proportional to 783.56, 1,175.27 and 296.61

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Solution

The fourth proportional to 783.56, 1,175.27 and 296.61 is: 444.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    783.56 : 1,175.27 = 296.61 : x
  2. Step 2: Convert to fraction form
    783.56/1,175.27 = 296.61/x
  3. Step 3: Cross multiply
    783.56x = 1,175.27 × 296.61
  4. Step 4: Simplify right side
    783.56x = 348,595.35
  5. Step 5: Solve for x
    x = 348,595.35/783.56
  6. Step 6: Final answer
    x = 444.89

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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.