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Finding the Fourth Proportional to 637.28, 955.92 and 348.64

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Solution

The fourth proportional to 637.28, 955.92 and 348.64 is: 522.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.28 : 955.92 = 348.64 : x
  2. Step 2: Convert to fraction form
    637.28/955.92 = 348.64/x
  3. Step 3: Cross multiply
    637.28x = 955.92 × 348.64
  4. Step 4: Simplify right side
    637.28x = 333,271.95
  5. Step 5: Solve for x
    x = 333,271.95/637.28
  6. Step 6: Final answer
    x = 522.96

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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.