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Finding the Fourth Proportional to 656.51, 985.39 and 482.65

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Solution

The fourth proportional to 656.51, 985.39 and 482.65 is: 724.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.51 : 985.39 = 482.65 : x
  2. Step 2: Convert to fraction form
    656.51/985.39 = 482.65/x
  3. Step 3: Cross multiply
    656.51x = 985.39 × 482.65
  4. Step 4: Simplify right side
    656.51x = 475,598.94
  5. Step 5: Solve for x
    x = 475,598.94/656.51
  6. Step 6: Final answer
    x = 724.43

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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.