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Finding the Fourth Proportional to 427.30, 589.58 and 240.80

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Solution

The fourth proportional to 427.30, 589.58 and 240.80 is: 332.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    427.30 : 589.58 = 240.80 : x
  2. Step 2: Convert to fraction form
    427.30/589.58 = 240.80/x
  3. Step 3: Cross multiply
    427.30x = 589.58 × 240.80
  4. Step 4: Simplify right side
    427.30x = 141,967.62
  5. Step 5: Solve for x
    x = 141,967.62/427.30
  6. Step 6: Final answer
    x = 332.25

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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.