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Finding the Fourth Proportional to 550.83, 826.61 and 307.53

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Solution

The fourth proportional to 550.83, 826.61 and 307.53 is: 461.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.83 : 826.61 = 307.53 : x
  2. Step 2: Convert to fraction form
    550.83/826.61 = 307.53/x
  3. Step 3: Cross multiply
    550.83x = 826.61 × 307.53
  4. Step 4: Simplify right side
    550.83x = 254,205.84
  5. Step 5: Solve for x
    x = 254,205.84/550.83
  6. Step 6: Final answer
    x = 461.49

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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.