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Finding the Fourth Proportional to 670.11, 925.01 and 448.98

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Solution

The fourth proportional to 670.11, 925.01 and 448.98 is: 619.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.11 : 925.01 = 448.98 : x
  2. Step 2: Convert to fraction form
    670.11/925.01 = 448.98/x
  3. Step 3: Cross multiply
    670.11x = 925.01 × 448.98
  4. Step 4: Simplify right side
    670.11x = 415,310.99
  5. Step 5: Solve for x
    x = 415,310.99/670.11
  6. Step 6: Final answer
    x = 619.77

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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.