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Finding the Fourth Proportional to 375.87, 519.21 and 302.47

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Solution

The fourth proportional to 375.87, 519.21 and 302.47 is: 417.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.87 : 519.21 = 302.47 : x
  2. Step 2: Convert to fraction form
    375.87/519.21 = 302.47/x
  3. Step 3: Cross multiply
    375.87x = 519.21 × 302.47
  4. Step 4: Simplify right side
    375.87x = 157,041.34
  5. Step 5: Solve for x
    x = 157,041.34/375.87
  6. Step 6: Final answer
    x = 417.81

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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.