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Finding the Fourth Proportional to 471.80, 702.68 and 454.79

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Solution

The fourth proportional to 471.80, 702.68 and 454.79 is: 677.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    471.80 : 702.68 = 454.79 : x
  2. Step 2: Convert to fraction form
    471.80/702.68 = 454.79/x
  3. Step 3: Cross multiply
    471.80x = 702.68 × 454.79
  4. Step 4: Simplify right side
    471.80x = 319,571.84
  5. Step 5: Solve for x
    x = 319,571.84/471.80
  6. Step 6: Final answer
    x = 677.35

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.