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Finding the Fourth Proportional to 585.92, 807.80 and 485.97

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Solution

The fourth proportional to 585.92, 807.80 and 485.97 is: 670.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.92 : 807.80 = 485.97 : x
  2. Step 2: Convert to fraction form
    585.92/807.80 = 485.97/x
  3. Step 3: Cross multiply
    585.92x = 807.80 × 485.97
  4. Step 4: Simplify right side
    585.92x = 392,564.14
  5. Step 5: Solve for x
    x = 392,564.14/585.92
  6. Step 6: Final answer
    x = 670.00

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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.