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Finding the Fourth Proportional to 375.04, 561.76 and 279.68

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Solution

The fourth proportional to 375.04, 561.76 and 279.68 is: 418.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.04 : 561.76 = 279.68 : x
  2. Step 2: Convert to fraction form
    375.04/561.76 = 279.68/x
  3. Step 3: Cross multiply
    375.04x = 561.76 × 279.68
  4. Step 4: Simplify right side
    375.04x = 157,113.04
  5. Step 5: Solve for x
    x = 157,113.04/375.04
  6. Step 6: Final answer
    x = 418.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.