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Finding the Fourth Proportional to 586.82, 879.09 and 545.70

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Solution

The fourth proportional to 586.82, 879.09 and 545.70 is: 817.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    586.82 : 879.09 = 545.70 : x
  2. Step 2: Convert to fraction form
    586.82/879.09 = 545.70/x
  3. Step 3: Cross multiply
    586.82x = 879.09 × 545.70
  4. Step 4: Simplify right side
    586.82x = 479,719.41
  5. Step 5: Solve for x
    x = 479,719.41/586.82
  6. Step 6: Final answer
    x = 817.50

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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.