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Finding the Fourth Proportional to 651.86, 977.26 and 445.92

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Solution

The fourth proportional to 651.86, 977.26 and 445.92 is: 668.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.86 : 977.26 = 445.92 : x
  2. Step 2: Convert to fraction form
    651.86/977.26 = 445.92/x
  3. Step 3: Cross multiply
    651.86x = 977.26 × 445.92
  4. Step 4: Simplify right side
    651.86x = 435,779.78
  5. Step 5: Solve for x
    x = 435,779.78/651.86
  6. Step 6: Final answer
    x = 668.52

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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.