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Finding the Fourth Proportional to 585.96, 807.78 and 570.60

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Solution

The fourth proportional to 585.96, 807.78 and 570.60 is: 786.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.96 : 807.78 = 570.60 : x
  2. Step 2: Convert to fraction form
    585.96/807.78 = 570.60/x
  3. Step 3: Cross multiply
    585.96x = 807.78 × 570.60
  4. Step 4: Simplify right side
    585.96x = 460,919.27
  5. Step 5: Solve for x
    x = 460,919.27/585.96
  6. Step 6: Final answer
    x = 786.61

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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.