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Finding the Fourth Proportional to 289.51, 432.16 and 251.26

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Solution

The fourth proportional to 289.51, 432.16 and 251.26 is: 375.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    289.51 : 432.16 = 251.26 : x
  2. Step 2: Convert to fraction form
    289.51/432.16 = 251.26/x
  3. Step 3: Cross multiply
    289.51x = 432.16 × 251.26
  4. Step 4: Simplify right side
    289.51x = 108,584.52
  5. Step 5: Solve for x
    x = 108,584.52/289.51
  6. Step 6: Final answer
    x = 375.06

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.