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Finding the Fourth Proportional to 468.95, 702.21 and 455.09

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Solution

The fourth proportional to 468.95, 702.21 and 455.09 is: 681.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    468.95 : 702.21 = 455.09 : x
  2. Step 2: Convert to fraction form
    468.95/702.21 = 455.09/x
  3. Step 3: Cross multiply
    468.95x = 702.21 × 455.09
  4. Step 4: Simplify right side
    468.95x = 319,568.75
  5. Step 5: Solve for x
    x = 319,568.75/468.95
  6. Step 6: Final answer
    x = 681.46

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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.