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Finding the Fourth Proportional to 292.93, 439.38 and 87.49

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Solution

The fourth proportional to 292.93, 439.38 and 87.49 is: 131.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    292.93 : 439.38 = 87.49 : x
  2. Step 2: Convert to fraction form
    292.93/439.38 = 87.49/x
  3. Step 3: Cross multiply
    292.93x = 439.38 × 87.49
  4. Step 4: Simplify right side
    292.93x = 38,441.36
  5. Step 5: Solve for x
    x = 38,441.36/292.93
  6. Step 6: Final answer
    x = 131.23

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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.