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Finding the Fourth Proportional to 656.76, 906.38 and 362.05

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Solution

The fourth proportional to 656.76, 906.38 and 362.05 is: 499.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.76 : 906.38 = 362.05 : x
  2. Step 2: Convert to fraction form
    656.76/906.38 = 362.05/x
  3. Step 3: Cross multiply
    656.76x = 906.38 × 362.05
  4. Step 4: Simplify right side
    656.76x = 328,154.88
  5. Step 5: Solve for x
    x = 328,154.88/656.76
  6. Step 6: Final answer
    x = 499.66

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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.