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Finding the Fourth Proportional to 672.06, 927.30 and 459.45

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Solution

The fourth proportional to 672.06, 927.30 and 459.45 is: 633.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.06 : 927.30 = 459.45 : x
  2. Step 2: Convert to fraction form
    672.06/927.30 = 459.45/x
  3. Step 3: Cross multiply
    672.06x = 927.30 × 459.45
  4. Step 4: Simplify right side
    672.06x = 426,047.99
  5. Step 5: Solve for x
    x = 426,047.99/672.06
  6. Step 6: Final answer
    x = 633.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.