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Finding the Fourth Proportional to 440.24, 607.10 and 347.09

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Solution

The fourth proportional to 440.24, 607.10 and 347.09 is: 478.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.24 : 607.10 = 347.09 : x
  2. Step 2: Convert to fraction form
    440.24/607.10 = 347.09/x
  3. Step 3: Cross multiply
    440.24x = 607.10 × 347.09
  4. Step 4: Simplify right side
    440.24x = 210,713.57
  5. Step 5: Solve for x
    x = 210,713.57/440.24
  6. Step 6: Final answer
    x = 478.64

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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.