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Finding the Fourth Proportional to 883.32, 1,326.15 and 513.33

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Solution

The fourth proportional to 883.32, 1,326.15 and 513.33 is: 770.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    883.32 : 1,326.15 = 513.33 : x
  2. Step 2: Convert to fraction form
    883.32/1,326.15 = 513.33/x
  3. Step 3: Cross multiply
    883.32x = 1,326.15 × 513.33
  4. Step 4: Simplify right side
    883.32x = 680,752.58
  5. Step 5: Solve for x
    x = 680,752.58/883.32
  6. Step 6: Final answer
    x = 770.67

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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.