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Finding the Fourth Proportional to 637.40, 954.92 and 328.93

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Solution

The fourth proportional to 637.40, 954.92 and 328.93 is: 492.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.40 : 954.92 = 328.93 : x
  2. Step 2: Convert to fraction form
    637.40/954.92 = 328.93/x
  3. Step 3: Cross multiply
    637.40x = 954.92 × 328.93
  4. Step 4: Simplify right side
    637.40x = 314,100.27
  5. Step 5: Solve for x
    x = 314,100.27/637.40
  6. Step 6: Final answer
    x = 492.78

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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.