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Finding the Fourth Proportional to 294.86, 404.32 and 284.56

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Solution

The fourth proportional to 294.86, 404.32 and 284.56 is: 390.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    294.86 : 404.32 = 284.56 : x
  2. Step 2: Convert to fraction form
    294.86/404.32 = 284.56/x
  3. Step 3: Cross multiply
    294.86x = 404.32 × 284.56
  4. Step 4: Simplify right side
    294.86x = 115,053.30
  5. Step 5: Solve for x
    x = 115,053.30/294.86
  6. Step 6: Final answer
    x = 390.20

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.