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Finding the Fourth Proportional to 486.59, 671.50 and 265.55

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Solution

The fourth proportional to 486.59, 671.50 and 265.55 is: 366.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    486.59 : 671.50 = 265.55 : x
  2. Step 2: Convert to fraction form
    486.59/671.50 = 265.55/x
  3. Step 3: Cross multiply
    486.59x = 671.50 × 265.55
  4. Step 4: Simplify right side
    486.59x = 178,314.13
  5. Step 5: Solve for x
    x = 178,314.13/486.59
  6. Step 6: Final answer
    x = 366.45

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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.