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Finding the Fourth Proportional to 675.59, 930.44 and 631.67

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Solution

The fourth proportional to 675.59, 930.44 and 631.67 is: 869.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.59 : 930.44 = 631.67 : x
  2. Step 2: Convert to fraction form
    675.59/930.44 = 631.67/x
  3. Step 3: Cross multiply
    675.59x = 930.44 × 631.67
  4. Step 4: Simplify right side
    675.59x = 587,727.96
  5. Step 5: Solve for x
    x = 587,727.96/675.59
  6. Step 6: Final answer
    x = 869.95

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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.