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Finding the Fourth Proportional to 633.16, 877.16 and 618.04

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Solution

The fourth proportional to 633.16, 877.16 and 618.04 is: 856.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.16 : 877.16 = 618.04 : x
  2. Step 2: Convert to fraction form
    633.16/877.16 = 618.04/x
  3. Step 3: Cross multiply
    633.16x = 877.16 × 618.04
  4. Step 4: Simplify right side
    633.16x = 542,116.88
  5. Step 5: Solve for x
    x = 542,116.88/633.16
  6. Step 6: Final answer
    x = 856.21

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.