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Finding the Fourth Proportional to 453.47, 626.06 and 406.76

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Solution

The fourth proportional to 453.47, 626.06 and 406.76 is: 561.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.47 : 626.06 = 406.76 : x
  2. Step 2: Convert to fraction form
    453.47/626.06 = 406.76/x
  3. Step 3: Cross multiply
    453.47x = 626.06 × 406.76
  4. Step 4: Simplify right side
    453.47x = 254,654.05
  5. Step 5: Solve for x
    x = 254,654.05/453.47
  6. Step 6: Final answer
    x = 561.57

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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.