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Finding the Fourth Proportional to 482.64, 666.21 and 283.52

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Solution

The fourth proportional to 482.64, 666.21 and 283.52 is: 391.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.64 : 666.21 = 283.52 : x
  2. Step 2: Convert to fraction form
    482.64/666.21 = 283.52/x
  3. Step 3: Cross multiply
    482.64x = 666.21 × 283.52
  4. Step 4: Simplify right side
    482.64x = 188,880.53
  5. Step 5: Solve for x
    x = 188,880.53/482.64
  6. Step 6: Final answer
    x = 391.35

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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.