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Finding the Fourth Proportional to 467.20, 702.08 and 436.72

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Solution

The fourth proportional to 467.20, 702.08 and 436.72 is: 656.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    467.20 : 702.08 = 436.72 : x
  2. Step 2: Convert to fraction form
    467.20/702.08 = 436.72/x
  3. Step 3: Cross multiply
    467.20x = 702.08 × 436.72
  4. Step 4: Simplify right side
    467.20x = 306,610.19
  5. Step 5: Solve for x
    x = 306,610.19/467.20
  6. Step 6: Final answer
    x = 656.28

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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.