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Finding the Fourth Proportional to 464.99, 698.74 and 342.86

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Solution

The fourth proportional to 464.99, 698.74 and 342.86 is: 515.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    464.99 : 698.74 = 342.86 : x
  2. Step 2: Convert to fraction form
    464.99/698.74 = 342.86/x
  3. Step 3: Cross multiply
    464.99x = 698.74 × 342.86
  4. Step 4: Simplify right side
    464.99x = 239,565.65
  5. Step 5: Solve for x
    x = 239,565.65/464.99
  6. Step 6: Final answer
    x = 515.21

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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.