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Finding the Fourth Proportional to 637.58, 955.53 and 550.91

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Solution

The fourth proportional to 637.58, 955.53 and 550.91 is: 825.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.58 : 955.53 = 550.91 : x
  2. Step 2: Convert to fraction form
    637.58/955.53 = 550.91/x
  3. Step 3: Cross multiply
    637.58x = 955.53 × 550.91
  4. Step 4: Simplify right side
    637.58x = 526,406.25
  5. Step 5: Solve for x
    x = 526,406.25/637.58
  6. Step 6: Final answer
    x = 825.64

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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.