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Finding the Fourth Proportional to 468.20, 702.30 and 441.20

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Solution

The fourth proportional to 468.20, 702.30 and 441.20 is: 661.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    468.20 : 702.30 = 441.20 : x
  2. Step 2: Convert to fraction form
    468.20/702.30 = 441.20/x
  3. Step 3: Cross multiply
    468.20x = 702.30 × 441.20
  4. Step 4: Simplify right side
    468.20x = 309,854.76
  5. Step 5: Solve for x
    x = 309,854.76/468.20
  6. Step 6: Final answer
    x = 661.80

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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.