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Finding the Fourth Proportional to 647.59, 892.66 and 481.54

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Solution

The fourth proportional to 647.59, 892.66 and 481.54 is: 663.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    647.59 : 892.66 = 481.54 : x
  2. Step 2: Convert to fraction form
    647.59/892.66 = 481.54/x
  3. Step 3: Cross multiply
    647.59x = 892.66 × 481.54
  4. Step 4: Simplify right side
    647.59x = 429,845.83
  5. Step 5: Solve for x
    x = 429,845.83/647.59
  6. Step 6: Final answer
    x = 663.77

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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.