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Finding the Fourth Proportional to 482.81, 666.03 and 283.50

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Solution

The fourth proportional to 482.81, 666.03 and 283.50 is: 391.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.81 : 666.03 = 283.50 : x
  2. Step 2: Convert to fraction form
    482.81/666.03 = 283.50/x
  3. Step 3: Cross multiply
    482.81x = 666.03 × 283.50
  4. Step 4: Simplify right side
    482.81x = 188,819.51
  5. Step 5: Solve for x
    x = 188,819.51/482.81
  6. Step 6: Final answer
    x = 391.09

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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.