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Finding the Fourth Proportional to 689.41, 1,033.15 and 534.61

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Solution

The fourth proportional to 689.41, 1,033.15 and 534.61 is: 801.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    689.41 : 1,033.15 = 534.61 : x
  2. Step 2: Convert to fraction form
    689.41/1,033.15 = 534.61/x
  3. Step 3: Cross multiply
    689.41x = 1,033.15 × 534.61
  4. Step 4: Simplify right side
    689.41x = 552,332.32
  5. Step 5: Solve for x
    x = 552,332.32/689.41
  6. Step 6: Final answer
    x = 801.17

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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.