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Finding the Fourth Proportional to 633.56, 873.86 and 412.70

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Solution

The fourth proportional to 633.56, 873.86 and 412.70 is: 569.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.56 : 873.86 = 412.70 : x
  2. Step 2: Convert to fraction form
    633.56/873.86 = 412.70/x
  3. Step 3: Cross multiply
    633.56x = 873.86 × 412.70
  4. Step 4: Simplify right side
    633.56x = 360,642.02
  5. Step 5: Solve for x
    x = 360,642.02/633.56
  6. Step 6: Final answer
    x = 569.23

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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.