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Finding the Fourth Proportional to 484.78, 669.26 and 374.02

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Solution

The fourth proportional to 484.78, 669.26 and 374.02 is: 516.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.78 : 669.26 = 374.02 : x
  2. Step 2: Convert to fraction form
    484.78/669.26 = 374.02/x
  3. Step 3: Cross multiply
    484.78x = 669.26 × 374.02
  4. Step 4: Simplify right side
    484.78x = 250,316.63
  5. Step 5: Solve for x
    x = 250,316.63/484.78
  6. Step 6: Final answer
    x = 516.35

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Double scale
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1.5x scale

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.