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Finding the Fourth Proportional to 482.61, 665.52 and 358.53

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Solution

The fourth proportional to 482.61, 665.52 and 358.53 is: 494.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.61 : 665.52 = 358.53 : x
  2. Step 2: Convert to fraction form
    482.61/665.52 = 358.53/x
  3. Step 3: Cross multiply
    482.61x = 665.52 × 358.53
  4. Step 4: Simplify right side
    482.61x = 238,608.89
  5. Step 5: Solve for x
    x = 238,608.89/482.61
  6. Step 6: Final answer
    x = 494.41

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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.