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Finding the Fourth Proportional to 788.82, 1,088.52 and 434.73

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Solution

The fourth proportional to 788.82, 1,088.52 and 434.73 is: 599.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    788.82 : 1,088.52 = 434.73 : x
  2. Step 2: Convert to fraction form
    788.82/1,088.52 = 434.73/x
  3. Step 3: Cross multiply
    788.82x = 1,088.52 × 434.73
  4. Step 4: Simplify right side
    788.82x = 473,212.30
  5. Step 5: Solve for x
    x = 473,212.30/788.82
  6. Step 6: Final answer
    x = 599.90

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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.