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Finding the Fourth Proportional to 290.56, 437.66 and 265.04

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Solution

The fourth proportional to 290.56, 437.66 and 265.04 is: 399.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    290.56 : 437.66 = 265.04 : x
  2. Step 2: Convert to fraction form
    290.56/437.66 = 265.04/x
  3. Step 3: Cross multiply
    290.56x = 437.66 × 265.04
  4. Step 4: Simplify right side
    290.56x = 115,996.08
  5. Step 5: Solve for x
    x = 115,996.08/290.56
  6. Step 6: Final answer
    x = 399.22

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.