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Finding the Fourth Proportional to 463.86, 693.88 and 423.30

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Solution

The fourth proportional to 463.86, 693.88 and 423.30 is: 633.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    463.86 : 693.88 = 423.30 : x
  2. Step 2: Convert to fraction form
    463.86/693.88 = 423.30/x
  3. Step 3: Cross multiply
    463.86x = 693.88 × 423.30
  4. Step 4: Simplify right side
    463.86x = 293,719.40
  5. Step 5: Solve for x
    x = 293,719.40/463.86
  6. Step 6: Final answer
    x = 633.21

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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.