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Finding the Fourth Proportional to 634.51, 875.64 and 372.61

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Solution

The fourth proportional to 634.51, 875.64 and 372.61 is: 514.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.51 : 875.64 = 372.61 : x
  2. Step 2: Convert to fraction form
    634.51/875.64 = 372.61/x
  3. Step 3: Cross multiply
    634.51x = 875.64 × 372.61
  4. Step 4: Simplify right side
    634.51x = 326,272.22
  5. Step 5: Solve for x
    x = 326,272.22/634.51
  6. Step 6: Final answer
    x = 514.21

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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.