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Finding the Fourth Proportional to 440.03, 607.30 and 253.58

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Solution

The fourth proportional to 440.03, 607.30 and 253.58 is: 349.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.03 : 607.30 = 253.58 : x
  2. Step 2: Convert to fraction form
    440.03/607.30 = 253.58/x
  3. Step 3: Cross multiply
    440.03x = 607.30 × 253.58
  4. Step 4: Simplify right side
    440.03x = 153,998.88
  5. Step 5: Solve for x
    x = 153,998.88/440.03
  6. Step 6: Final answer
    x = 349.97

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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.