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Finding the Fourth Proportional to 634.17, 875.15 and 368.61

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Solution

The fourth proportional to 634.17, 875.15 and 368.61 is: 508.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.17 : 875.15 = 368.61 : x
  2. Step 2: Convert to fraction form
    634.17/875.15 = 368.61/x
  3. Step 3: Cross multiply
    634.17x = 875.15 × 368.61
  4. Step 4: Simplify right side
    634.17x = 322,585.30
  5. Step 5: Solve for x
    x = 322,585.30/634.17
  6. Step 6: Final answer
    x = 508.67

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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.