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Finding the Fourth Proportional to 469.32, 648.30 and 375.92

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Solution

The fourth proportional to 469.32, 648.30 and 375.92 is: 519.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.32 : 648.30 = 375.92 : x
  2. Step 2: Convert to fraction form
    469.32/648.30 = 375.92/x
  3. Step 3: Cross multiply
    469.32x = 648.30 × 375.92
  4. Step 4: Simplify right side
    469.32x = 243,708.94
  5. Step 5: Solve for x
    x = 243,708.94/469.32
  6. Step 6: Final answer
    x = 519.28

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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.