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Finding the Fourth Proportional to 462.29, 693.43 and 188.38

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Solution

The fourth proportional to 462.29, 693.43 and 188.38 is: 282.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    462.29 : 693.43 = 188.38 : x
  2. Step 2: Convert to fraction form
    462.29/693.43 = 188.38/x
  3. Step 3: Cross multiply
    462.29x = 693.43 × 188.38
  4. Step 4: Simplify right side
    462.29x = 130,628.34
  5. Step 5: Solve for x
    x = 130,628.34/462.29
  6. Step 6: Final answer
    x = 282.57

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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.