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Finding the Fourth Proportional to 662.76, 998.10 and 501.60

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Solution

The fourth proportional to 662.76, 998.10 and 501.60 is: 755.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.76 : 998.10 = 501.60 : x
  2. Step 2: Convert to fraction form
    662.76/998.10 = 501.60/x
  3. Step 3: Cross multiply
    662.76x = 998.10 × 501.60
  4. Step 4: Simplify right side
    662.76x = 500,646.96
  5. Step 5: Solve for x
    x = 500,646.96/662.76
  6. Step 6: Final answer
    x = 755.40

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.