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Finding the Fourth Proportional to 656.82, 985.08 and 245.88

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Solution

The fourth proportional to 656.82, 985.08 and 245.88 is: 368.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.82 : 985.08 = 245.88 : x
  2. Step 2: Convert to fraction form
    656.82/985.08 = 245.88/x
  3. Step 3: Cross multiply
    656.82x = 985.08 × 245.88
  4. Step 4: Simplify right side
    656.82x = 242,211.47
  5. Step 5: Solve for x
    x = 242,211.47/656.82
  6. Step 6: Final answer
    x = 368.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.