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Finding the Fourth Proportional to 636.45, 880.70 and 543.05

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Solution

The fourth proportional to 636.45, 880.70 and 543.05 is: 751.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.45 : 880.70 = 543.05 : x
  2. Step 2: Convert to fraction form
    636.45/880.70 = 543.05/x
  3. Step 3: Cross multiply
    636.45x = 880.70 × 543.05
  4. Step 4: Simplify right side
    636.45x = 478,264.14
  5. Step 5: Solve for x
    x = 478,264.14/636.45
  6. Step 6: Final answer
    x = 751.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.