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Finding the Fourth Proportional to 616.55, 851.96 and 459.82

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Solution

The fourth proportional to 616.55, 851.96 and 459.82 is: 635.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.55 : 851.96 = 459.82 : x
  2. Step 2: Convert to fraction form
    616.55/851.96 = 459.82/x
  3. Step 3: Cross multiply
    616.55x = 851.96 × 459.82
  4. Step 4: Simplify right side
    616.55x = 391,741.69
  5. Step 5: Solve for x
    x = 391,741.69/616.55
  6. Step 6: Final answer
    x = 635.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.