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Finding the Fourth Proportional to 551.10, 821.91 and 469.37

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Solution

The fourth proportional to 551.10, 821.91 and 469.37 is: 700.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.10 : 821.91 = 469.37 : x
  2. Step 2: Convert to fraction form
    551.10/821.91 = 469.37/x
  3. Step 3: Cross multiply
    551.10x = 821.91 × 469.37
  4. Step 4: Simplify right side
    551.10x = 385,775.79
  5. Step 5: Solve for x
    x = 385,775.79/551.10
  6. Step 6: Final answer
    x = 700.01

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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.