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Finding the Fourth Proportional to 292.19, 437.69 and 135.79

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Solution

The fourth proportional to 292.19, 437.69 and 135.79 is: 203.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    292.19 : 437.69 = 135.79 : x
  2. Step 2: Convert to fraction form
    292.19/437.69 = 135.79/x
  3. Step 3: Cross multiply
    292.19x = 437.69 × 135.79
  4. Step 4: Simplify right side
    292.19x = 59,433.25
  5. Step 5: Solve for x
    x = 59,433.25/292.19
  6. Step 6: Final answer
    x = 203.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.