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Finding the Fourth Proportional to 585.44, 872.98 and 545.72

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Solution

The fourth proportional to 585.44, 872.98 and 545.72 is: 813.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    585.44 : 872.98 = 545.72 : x
  2. Step 2: Convert to fraction form
    585.44/872.98 = 545.72/x
  3. Step 3: Cross multiply
    585.44x = 872.98 × 545.72
  4. Step 4: Simplify right side
    585.44x = 476,402.65
  5. Step 5: Solve for x
    x = 476,402.65/585.44
  6. Step 6: Final answer
    x = 813.75

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.