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Finding the Fourth Proportional to 290.64, 437.53 and 265.53

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Solution

The fourth proportional to 290.64, 437.53 and 265.53 is: 399.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    290.64 : 437.53 = 265.53 : x
  2. Step 2: Convert to fraction form
    290.64/437.53 = 265.53/x
  3. Step 3: Cross multiply
    290.64x = 437.53 × 265.53
  4. Step 4: Simplify right side
    290.64x = 116,177.34
  5. Step 5: Solve for x
    x = 116,177.34/290.64
  6. Step 6: Final answer
    x = 399.73

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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.