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Finding the Fourth Proportional to 462.28, 693.47 and 188.40

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Solution

The fourth proportional to 462.28, 693.47 and 188.40 is: 282.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    462.28 : 693.47 = 188.40 : x
  2. Step 2: Convert to fraction form
    462.28/693.47 = 188.40/x
  3. Step 3: Cross multiply
    462.28x = 693.47 × 188.40
  4. Step 4: Simplify right side
    462.28x = 130,649.75
  5. Step 5: Solve for x
    x = 130,649.75/462.28
  6. Step 6: Final answer
    x = 282.62

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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.