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Finding the Fourth Proportional to 679.41, 935.96 and 560.88

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Solution

The fourth proportional to 679.41, 935.96 and 560.88 is: 772.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    679.41 : 935.96 = 560.88 : x
  2. Step 2: Convert to fraction form
    679.41/935.96 = 560.88/x
  3. Step 3: Cross multiply
    679.41x = 935.96 × 560.88
  4. Step 4: Simplify right side
    679.41x = 524,958.44
  5. Step 5: Solve for x
    x = 524,958.44/679.41
  6. Step 6: Final answer
    x = 772.67

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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.