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Finding the Fourth Proportional to 689.00, 1,032.52 and 534.20

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Solution

The fourth proportional to 689.00, 1,032.52 and 534.20 is: 800.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    689.00 : 1,032.52 = 534.20 : x
  2. Step 2: Convert to fraction form
    689.00/1,032.52 = 534.20/x
  3. Step 3: Cross multiply
    689.00x = 1,032.52 × 534.20
  4. Step 4: Simplify right side
    689.00x = 551,576.90
  5. Step 5: Solve for x
    x = 551,576.90/689.00
  6. Step 6: Final answer
    x = 800.55

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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.