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Finding the Fourth Proportional to 883.35, 1,218.87 and 510.31

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Solution

The fourth proportional to 883.35, 1,218.87 and 510.31 is: 704.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    883.35 : 1,218.87 = 510.31 : x
  2. Step 2: Convert to fraction form
    883.35/1,218.87 = 510.31/x
  3. Step 3: Cross multiply
    883.35x = 1,218.87 × 510.31
  4. Step 4: Simplify right side
    883.35x = 622,001.55
  5. Step 5: Solve for x
    x = 622,001.55/883.35
  6. Step 6: Final answer
    x = 704.14

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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.