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Finding the Fourth Proportional to 483.78, 666.45 and 336.18

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Solution

The fourth proportional to 483.78, 666.45 and 336.18 is: 463.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.78 : 666.45 = 336.18 : x
  2. Step 2: Convert to fraction form
    483.78/666.45 = 336.18/x
  3. Step 3: Cross multiply
    483.78x = 666.45 × 336.18
  4. Step 4: Simplify right side
    483.78x = 224,047.16
  5. Step 5: Solve for x
    x = 224,047.16/483.78
  6. Step 6: Final answer
    x = 463.12

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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.