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Finding the Fourth Proportional to 883.47, 1,219.12 and 551.87

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Solution

The fourth proportional to 883.47, 1,219.12 and 551.87 is: 761.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    883.47 : 1,219.12 = 551.87 : x
  2. Step 2: Convert to fraction form
    883.47/1,219.12 = 551.87/x
  3. Step 3: Cross multiply
    883.47x = 1,219.12 × 551.87
  4. Step 4: Simplify right side
    883.47x = 672,795.75
  5. Step 5: Solve for x
    x = 672,795.75/883.47
  6. Step 6: Final answer
    x = 761.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.