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Finding the Fourth Proportional to 682.96, 1,024.56 and 358.24

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Solution

The fourth proportional to 682.96, 1,024.56 and 358.24 is: 537.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    682.96 : 1,024.56 = 358.24 : x
  2. Step 2: Convert to fraction form
    682.96/1,024.56 = 358.24/x
  3. Step 3: Cross multiply
    682.96x = 1,024.56 × 358.24
  4. Step 4: Simplify right side
    682.96x = 367,038.37
  5. Step 5: Solve for x
    x = 367,038.37/682.96
  6. Step 6: Final answer
    x = 537.42

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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.