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Finding the Fourth Proportional to 453.55, 625.95 and 342.85

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Solution

The fourth proportional to 453.55, 625.95 and 342.85 is: 473.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.55 : 625.95 = 342.85 : x
  2. Step 2: Convert to fraction form
    453.55/625.95 = 342.85/x
  3. Step 3: Cross multiply
    453.55x = 625.95 × 342.85
  4. Step 4: Simplify right side
    453.55x = 214,606.96
  5. Step 5: Solve for x
    x = 214,606.96/453.55
  6. Step 6: Final answer
    x = 473.17

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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.