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Finding the Fourth Proportional to 586.16, 878.77 and 239.66

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Solution

The fourth proportional to 586.16, 878.77 and 239.66 is: 359.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    586.16 : 878.77 = 239.66 : x
  2. Step 2: Convert to fraction form
    586.16/878.77 = 239.66/x
  3. Step 3: Cross multiply
    586.16x = 878.77 × 239.66
  4. Step 4: Simplify right side
    586.16x = 210,607.62
  5. Step 5: Solve for x
    x = 210,607.62/586.16
  6. Step 6: Final answer
    x = 359.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.