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Finding the Fourth Proportional to 669.81, 924.25 and 375

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Solution

The fourth proportional to 669.81, 924.25 and 375 is: 517.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.81 : 924.25 = 375 : x
  2. Step 2: Convert to fraction form
    669.81/924.25 = 375/x
  3. Step 3: Cross multiply
    669.81x = 924.25 × 375
  4. Step 4: Simplify right side
    669.81x = 346,591.88
  5. Step 5: Solve for x
    x = 346,591.88/669.81
  6. Step 6: Final answer
    x = 517.45

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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.