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Finding the Fourth Proportional to 581.10, 867.96 and 418.68

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Solution

The fourth proportional to 581.10, 867.96 and 418.68 is: 625.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.10 : 867.96 = 418.68 : x
  2. Step 2: Convert to fraction form
    581.10/867.96 = 418.68/x
  3. Step 3: Cross multiply
    581.10x = 867.96 × 418.68
  4. Step 4: Simplify right side
    581.10x = 363,397.49
  5. Step 5: Solve for x
    x = 363,397.49/581.10
  6. Step 6: Final answer
    x = 625.36

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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.