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Finding the Fourth Proportional to 635.60, 874.58 and 616.58

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Solution

The fourth proportional to 635.60, 874.58 and 616.58 is: 848.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    635.60 : 874.58 = 616.58 : x
  2. Step 2: Convert to fraction form
    635.60/874.58 = 616.58/x
  3. Step 3: Cross multiply
    635.60x = 874.58 × 616.58
  4. Step 4: Simplify right side
    635.60x = 539,241.08
  5. Step 5: Solve for x
    x = 539,241.08/635.60
  6. Step 6: Final answer
    x = 848.40

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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.