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Finding the Fourth Proportional to 464.81, 697.28 and 190.86

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Solution

The fourth proportional to 464.81, 697.28 and 190.86 is: 286.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    464.81 : 697.28 = 190.86 : x
  2. Step 2: Convert to fraction form
    464.81/697.28 = 190.86/x
  3. Step 3: Cross multiply
    464.81x = 697.28 × 190.86
  4. Step 4: Simplify right side
    464.81x = 133,085.17
  5. Step 5: Solve for x
    x = 133,085.17/464.81
  6. Step 6: Final answer
    x = 286.32

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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.