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Finding the Fourth Proportional to 459.06, 688.19 and 276.81

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Solution

The fourth proportional to 459.06, 688.19 and 276.81 is: 414.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    459.06 : 688.19 = 276.81 : x
  2. Step 2: Convert to fraction form
    459.06/688.19 = 276.81/x
  3. Step 3: Cross multiply
    459.06x = 688.19 × 276.81
  4. Step 4: Simplify right side
    459.06x = 190,496.49
  5. Step 5: Solve for x
    x = 190,496.49/459.06
  6. Step 6: Final answer
    x = 414.97

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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.