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Finding the Fourth Proportional to 623.23, 859.32 and 445.99

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Solution

The fourth proportional to 623.23, 859.32 and 445.99 is: 614.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.23 : 859.32 = 445.99 : x
  2. Step 2: Convert to fraction form
    623.23/859.32 = 445.99/x
  3. Step 3: Cross multiply
    623.23x = 859.32 × 445.99
  4. Step 4: Simplify right side
    623.23x = 383,248.13
  5. Step 5: Solve for x
    x = 383,248.13/623.23
  6. Step 6: Final answer
    x = 614.94

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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.