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Finding the Fourth Proportional to 634.02, 877.44 and 623.22

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Solution

The fourth proportional to 634.02, 877.44 and 623.22 is: 862.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.02 : 877.44 = 623.22 : x
  2. Step 2: Convert to fraction form
    634.02/877.44 = 623.22/x
  3. Step 3: Cross multiply
    634.02x = 877.44 × 623.22
  4. Step 4: Simplify right side
    634.02x = 546,838.16
  5. Step 5: Solve for x
    x = 546,838.16/634.02
  6. Step 6: Final answer
    x = 862.49

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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.