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Finding the Fourth Proportional to 440.00, 607.21 and 253.49

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Solution

The fourth proportional to 440.00, 607.21 and 253.49 is: 349.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.00 : 607.21 = 253.49 : x
  2. Step 2: Convert to fraction form
    440.00/607.21 = 253.49/x
  3. Step 3: Cross multiply
    440.00x = 607.21 × 253.49
  4. Step 4: Simplify right side
    440.00x = 153,921.82
  5. Step 5: Solve for x
    x = 153,921.82/440.00
  6. Step 6: Final answer
    x = 349.82

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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.