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Finding the Fourth Proportional to 585.55, 807.69 and 427.96

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Solution

The fourth proportional to 585.55, 807.69 and 427.96 is: 590.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.55 : 807.69 = 427.96 : x
  2. Step 2: Convert to fraction form
    585.55/807.69 = 427.96/x
  3. Step 3: Cross multiply
    585.55x = 807.69 × 427.96
  4. Step 4: Simplify right side
    585.55x = 345,659.01
  5. Step 5: Solve for x
    x = 345,659.01/585.55
  6. Step 6: Final answer
    x = 590.32

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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.