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Finding the Fourth Proportional to 634.16, 875.08 and 354.39

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Solution

The fourth proportional to 634.16, 875.08 and 354.39 is: 489.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.16 : 875.08 = 354.39 : x
  2. Step 2: Convert to fraction form
    634.16/875.08 = 354.39/x
  3. Step 3: Cross multiply
    634.16x = 875.08 × 354.39
  4. Step 4: Simplify right side
    634.16x = 310,116.76
  5. Step 5: Solve for x
    x = 310,116.76/634.16
  6. Step 6: Final answer
    x = 489.02

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1.5x scale

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.