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Finding the Fourth Proportional to 482.79, 666.27 and 275.79

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Solution

The fourth proportional to 482.79, 666.27 and 275.79 is: 380.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.79 : 666.27 = 275.79 : x
  2. Step 2: Convert to fraction form
    482.79/666.27 = 275.79/x
  3. Step 3: Cross multiply
    482.79x = 666.27 × 275.79
  4. Step 4: Simplify right side
    482.79x = 183,750.60
  5. Step 5: Solve for x
    x = 183,750.60/482.79
  6. Step 6: Final answer
    x = 380.60

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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.