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Finding the Fourth Proportional to 617.28, 925.56 and 292.56

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Solution

The fourth proportional to 617.28, 925.56 and 292.56 is: 438.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.28 : 925.56 = 292.56 : x
  2. Step 2: Convert to fraction form
    617.28/925.56 = 292.56/x
  3. Step 3: Cross multiply
    617.28x = 925.56 × 292.56
  4. Step 4: Simplify right side
    617.28x = 270,781.83
  5. Step 5: Solve for x
    x = 270,781.83/617.28
  6. Step 6: Final answer
    x = 438.67

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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.