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Finding the Fourth Proportional to 976.31, 1,464.29 and 282.82

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Solution

The fourth proportional to 976.31, 1,464.29 and 282.82 is: 424.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    976.31 : 1,464.29 = 282.82 : x
  2. Step 2: Convert to fraction form
    976.31/1,464.29 = 282.82/x
  3. Step 3: Cross multiply
    976.31x = 1,464.29 × 282.82
  4. Step 4: Simplify right side
    976.31x = 414,121.76
  5. Step 5: Solve for x
    x = 414,121.76/976.31
  6. Step 6: Final answer
    x = 424.17

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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.