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Finding the Fourth Proportional to 463.12, 693.72 and 270.64

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Solution

The fourth proportional to 463.12, 693.72 and 270.64 is: 405.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    463.12 : 693.72 = 270.64 : x
  2. Step 2: Convert to fraction form
    463.12/693.72 = 270.64/x
  3. Step 3: Cross multiply
    463.12x = 693.72 × 270.64
  4. Step 4: Simplify right side
    463.12x = 187,748.38
  5. Step 5: Solve for x
    x = 187,748.38/463.12
  6. Step 6: Final answer
    x = 405.40

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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.