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Finding the Fourth Proportional to 440.19, 607.59 and 272.21

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Solution

The fourth proportional to 440.19, 607.59 and 272.21 is: 375.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.19 : 607.59 = 272.21 : x
  2. Step 2: Convert to fraction form
    440.19/607.59 = 272.21/x
  3. Step 3: Cross multiply
    440.19x = 607.59 × 272.21
  4. Step 4: Simplify right side
    440.19x = 165,389.04
  5. Step 5: Solve for x
    x = 165,389.04/440.19
  6. Step 6: Final answer
    x = 375.72

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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.