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Finding the Fourth Proportional to 440.23, 607.25 and 290.86

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Solution

The fourth proportional to 440.23, 607.25 and 290.86 is: 401.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.23 : 607.25 = 290.86 : x
  2. Step 2: Convert to fraction form
    440.23/607.25 = 290.86/x
  3. Step 3: Cross multiply
    440.23x = 607.25 × 290.86
  4. Step 4: Simplify right side
    440.23x = 176,623.94
  5. Step 5: Solve for x
    x = 176,623.94/440.23
  6. Step 6: Final answer
    x = 401.21

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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.