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Finding the Fourth Proportional to 453.47, 621.99 and 427.01

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Solution

The fourth proportional to 453.47, 621.99 and 427.01 is: 585.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.47 : 621.99 = 427.01 : x
  2. Step 2: Convert to fraction form
    453.47/621.99 = 427.01/x
  3. Step 3: Cross multiply
    453.47x = 621.99 × 427.01
  4. Step 4: Simplify right side
    453.47x = 265,592.84
  5. Step 5: Solve for x
    x = 265,592.84/453.47
  6. Step 6: Final answer
    x = 585.70

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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.