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Finding the Fourth Proportional to 828.10, 1,142.52 and 532.84

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Solution

The fourth proportional to 828.10, 1,142.52 and 532.84 is: 735.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    828.10 : 1,142.52 = 532.84 : x
  2. Step 2: Convert to fraction form
    828.10/1,142.52 = 532.84/x
  3. Step 3: Cross multiply
    828.10x = 1,142.52 × 532.84
  4. Step 4: Simplify right side
    828.10x = 608,780.36
  5. Step 5: Solve for x
    x = 608,780.36/828.10
  6. Step 6: Final answer
    x = 735.15

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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.