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Finding the Fourth Proportional to 551.16, 822.57 and 536.58

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Solution

The fourth proportional to 551.16, 822.57 and 536.58 is: 800.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.16 : 822.57 = 536.58 : x
  2. Step 2: Convert to fraction form
    551.16/822.57 = 536.58/x
  3. Step 3: Cross multiply
    551.16x = 822.57 × 536.58
  4. Step 4: Simplify right side
    551.16x = 441,374.61
  5. Step 5: Solve for x
    x = 441,374.61/551.16
  6. Step 6: Final answer
    x = 800.81

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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.