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Finding the Fourth Proportional to 637.56, 956.28 and 328.50

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Solution

The fourth proportional to 637.56, 956.28 and 328.50 is: 492.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.56 : 956.28 = 328.50 : x
  2. Step 2: Convert to fraction form
    637.56/956.28 = 328.50/x
  3. Step 3: Cross multiply
    637.56x = 956.28 × 328.50
  4. Step 4: Simplify right side
    637.56x = 314,137.98
  5. Step 5: Solve for x
    x = 314,137.98/637.56
  6. Step 6: Final answer
    x = 492.72

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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.