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Finding the Fourth Proportional to 671.77, 926.34 and 656.68

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Solution

The fourth proportional to 671.77, 926.34 and 656.68 is: 905.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.77 : 926.34 = 656.68 : x
  2. Step 2: Convert to fraction form
    671.77/926.34 = 656.68/x
  3. Step 3: Cross multiply
    671.77x = 926.34 × 656.68
  4. Step 4: Simplify right side
    671.77x = 608,308.95
  5. Step 5: Solve for x
    x = 608,308.95/671.77
  6. Step 6: Final answer
    x = 905.53

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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.