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Finding the Fourth Proportional to 482.69, 665.55 and 356.83

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Solution

The fourth proportional to 482.69, 665.55 and 356.83 is: 492.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.69 : 665.55 = 356.83 : x
  2. Step 2: Convert to fraction form
    482.69/665.55 = 356.83/x
  3. Step 3: Cross multiply
    482.69x = 665.55 × 356.83
  4. Step 4: Simplify right side
    482.69x = 237,488.21
  5. Step 5: Solve for x
    x = 237,488.21/482.69
  6. Step 6: Final answer
    x = 492.01

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Double scale
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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.