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Finding the Fourth Proportional to 427.11, 589.47 and 240.64

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Solution

The fourth proportional to 427.11, 589.47 and 240.64 is: 332.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    427.11 : 589.47 = 240.64 : x
  2. Step 2: Convert to fraction form
    427.11/589.47 = 240.64/x
  3. Step 3: Cross multiply
    427.11x = 589.47 × 240.64
  4. Step 4: Simplify right side
    427.11x = 141,849.26
  5. Step 5: Solve for x
    x = 141,849.26/427.11
  6. Step 6: Final answer
    x = 332.11

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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.