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Finding the Fourth Proportional to 482.60, 665.25 and 307.64

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Solution

The fourth proportional to 482.60, 665.25 and 307.64 is: 424.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.60 : 665.25 = 307.64 : x
  2. Step 2: Convert to fraction form
    482.60/665.25 = 307.64/x
  3. Step 3: Cross multiply
    482.60x = 665.25 × 307.64
  4. Step 4: Simplify right side
    482.60x = 204,658.02
  5. Step 5: Solve for x
    x = 204,658.02/482.60
  6. Step 6: Final answer
    x = 424.07

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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.