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Finding the Fourth Proportional to 656.73, 985.50 and 245.91

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Solution

The fourth proportional to 656.73, 985.50 and 245.91 is: 369.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.73 : 985.50 = 245.91 : x
  2. Step 2: Convert to fraction form
    656.73/985.50 = 245.91/x
  3. Step 3: Cross multiply
    656.73x = 985.50 × 245.91
  4. Step 4: Simplify right side
    656.73x = 242,344.31
  5. Step 5: Solve for x
    x = 242,344.31/656.73
  6. Step 6: Final answer
    x = 369.02

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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.