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Finding the Fourth Proportional to 661.77, 993.87 and 500.58

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Solution

The fourth proportional to 661.77, 993.87 and 500.58 is: 751.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    661.77 : 993.87 = 500.58 : x
  2. Step 2: Convert to fraction form
    661.77/993.87 = 500.58/x
  3. Step 3: Cross multiply
    661.77x = 993.87 × 500.58
  4. Step 4: Simplify right side
    661.77x = 497,511.44
  5. Step 5: Solve for x
    x = 497,511.44/661.77
  6. Step 6: Final answer
    x = 751.79

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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.