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Finding the Fourth Proportional to 486.71, 672.06 and 451.53

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Solution

The fourth proportional to 486.71, 672.06 and 451.53 is: 623.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    486.71 : 672.06 = 451.53 : x
  2. Step 2: Convert to fraction form
    486.71/672.06 = 451.53/x
  3. Step 3: Cross multiply
    486.71x = 672.06 × 451.53
  4. Step 4: Simplify right side
    486.71x = 303,455.25
  5. Step 5: Solve for x
    x = 303,455.25/486.71
  6. Step 6: Final answer
    x = 623.49

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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.