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Finding the Fourth Proportional to 453.04, 621.86 and 402.82

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Solution

The fourth proportional to 453.04, 621.86 and 402.82 is: 552.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.04 : 621.86 = 402.82 : x
  2. Step 2: Convert to fraction form
    453.04/621.86 = 402.82/x
  3. Step 3: Cross multiply
    453.04x = 621.86 × 402.82
  4. Step 4: Simplify right side
    453.04x = 250,497.65
  5. Step 5: Solve for x
    x = 250,497.65/453.04
  6. Step 6: Final answer
    x = 552.93

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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.