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Finding the Fourth Proportional to 551.07, 822.90 and 545.00

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Solution

The fourth proportional to 551.07, 822.90 and 545.00 is: 813.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.07 : 822.90 = 545.00 : x
  2. Step 2: Convert to fraction form
    551.07/822.90 = 545.00/x
  3. Step 3: Cross multiply
    551.07x = 822.90 × 545.00
  4. Step 4: Simplify right side
    551.07x = 448,476.39
  5. Step 5: Solve for x
    x = 448,476.39/551.07
  6. Step 6: Final answer
    x = 813.83

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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.