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Finding the Fourth Proportional to 591.57, 885.37 and 545.70

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Solution

The fourth proportional to 591.57, 885.37 and 545.70 is: 816.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.57 : 885.37 = 545.70 : x
  2. Step 2: Convert to fraction form
    591.57/885.37 = 545.70/x
  3. Step 3: Cross multiply
    591.57x = 885.37 × 545.70
  4. Step 4: Simplify right side
    591.57x = 483,146.41
  5. Step 5: Solve for x
    x = 483,146.41/591.57
  6. Step 6: Final answer
    x = 816.72

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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.