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Finding the Fourth Proportional to 882.46, 1,218.23 and 672.67

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Solution

The fourth proportional to 882.46, 1,218.23 and 672.67 is: 928.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    882.46 : 1,218.23 = 672.67 : x
  2. Step 2: Convert to fraction form
    882.46/1,218.23 = 672.67/x
  3. Step 3: Cross multiply
    882.46x = 1,218.23 × 672.67
  4. Step 4: Simplify right side
    882.46x = 819,466.77
  5. Step 5: Solve for x
    x = 819,466.77/882.46
  6. Step 6: Final answer
    x = 928.62

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1.5x scale

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.