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Finding the Fourth Proportional to 585.62, 808.05 and 378.50

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Solution

The fourth proportional to 585.62, 808.05 and 378.50 is: 522.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.62 : 808.05 = 378.50 : x
  2. Step 2: Convert to fraction form
    585.62/808.05 = 378.50/x
  3. Step 3: Cross multiply
    585.62x = 808.05 × 378.50
  4. Step 4: Simplify right side
    585.62x = 305,846.93
  5. Step 5: Solve for x
    x = 305,846.93/585.62
  6. Step 6: Final answer
    x = 522.26

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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.