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Finding the Fourth Proportional to 557.92, 769.51 and 358.57

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Solution

The fourth proportional to 557.92, 769.51 and 358.57 is: 494.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    557.92 : 769.51 = 358.57 : x
  2. Step 2: Convert to fraction form
    557.92/769.51 = 358.57/x
  3. Step 3: Cross multiply
    557.92x = 769.51 × 358.57
  4. Step 4: Simplify right side
    557.92x = 275,923.20
  5. Step 5: Solve for x
    x = 275,923.20/557.92
  6. Step 6: Final answer
    x = 494.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.