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Finding the Fourth Proportional to 468.78, 702.69 and 304.35

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Solution

The fourth proportional to 468.78, 702.69 and 304.35 is: 456.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    468.78 : 702.69 = 304.35 : x
  2. Step 2: Convert to fraction form
    468.78/702.69 = 304.35/x
  3. Step 3: Cross multiply
    468.78x = 702.69 × 304.35
  4. Step 4: Simplify right side
    468.78x = 213,863.61
  5. Step 5: Solve for x
    x = 213,863.61/468.78
  6. Step 6: Final answer
    x = 456.21

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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.