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Finding the Fourth Proportional to 452.79, 679.59 and 247.32

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Solution

The fourth proportional to 452.79, 679.59 and 247.32 is: 371.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.79 : 679.59 = 247.32 : x
  2. Step 2: Convert to fraction form
    452.79/679.59 = 247.32/x
  3. Step 3: Cross multiply
    452.79x = 679.59 × 247.32
  4. Step 4: Simplify right side
    452.79x = 168,076.20
  5. Step 5: Solve for x
    x = 168,076.20/452.79
  6. Step 6: Final answer
    x = 371.20

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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.