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Finding the Fourth Proportional to 625.48, 933.89 and 538.72

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Solution

The fourth proportional to 625.48, 933.89 and 538.72 is: 804.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.48 : 933.89 = 538.72 : x
  2. Step 2: Convert to fraction form
    625.48/933.89 = 538.72/x
  3. Step 3: Cross multiply
    625.48x = 933.89 × 538.72
  4. Step 4: Simplify right side
    625.48x = 503,105.22
  5. Step 5: Solve for x
    x = 503,105.22/625.48
  6. Step 6: Final answer
    x = 804.35

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.