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Finding the Fourth Proportional to 468.18, 702.37 and 143.54

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Solution

The fourth proportional to 468.18, 702.37 and 143.54 is: 215.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    468.18 : 702.37 = 143.54 : x
  2. Step 2: Convert to fraction form
    468.18/702.37 = 143.54/x
  3. Step 3: Cross multiply
    468.18x = 702.37 × 143.54
  4. Step 4: Simplify right side
    468.18x = 100,816.08
  5. Step 5: Solve for x
    x = 100,816.08/468.18
  6. Step 6: Final answer
    x = 215.34

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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.