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Finding the Fourth Proportional to 427.07, 589.30 and 240.55

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Solution

The fourth proportional to 427.07, 589.30 and 240.55 is: 331.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    427.07 : 589.30 = 240.55 : x
  2. Step 2: Convert to fraction form
    427.07/589.30 = 240.55/x
  3. Step 3: Cross multiply
    427.07x = 589.30 × 240.55
  4. Step 4: Simplify right side
    427.07x = 141,756.12
  5. Step 5: Solve for x
    x = 141,756.12/427.07
  6. Step 6: Final answer
    x = 331.93

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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.