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Finding the Fourth Proportional to 551.12, 824.51 and 397.34

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Solution

The fourth proportional to 551.12, 824.51 and 397.34 is: 594.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.12 : 824.51 = 397.34 : x
  2. Step 2: Convert to fraction form
    551.12/824.51 = 397.34/x
  3. Step 3: Cross multiply
    551.12x = 824.51 × 397.34
  4. Step 4: Simplify right side
    551.12x = 327,607.67
  5. Step 5: Solve for x
    x = 327,607.67/551.12
  6. Step 6: Final answer
    x = 594.45

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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.