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Finding the Fourth Proportional to 671.49, 999.47 and 656.37

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Solution

The fourth proportional to 671.49, 999.47 and 656.37 is: 976.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.49 : 999.47 = 656.37 : x
  2. Step 2: Convert to fraction form
    671.49/999.47 = 656.37/x
  3. Step 3: Cross multiply
    671.49x = 999.47 × 656.37
  4. Step 4: Simplify right side
    671.49x = 656,023.76
  5. Step 5: Solve for x
    x = 656,023.76/671.49
  6. Step 6: Final answer
    x = 976.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.