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Finding the Fourth Proportional to 670.90, 925.88 and 376.26

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Solution

The fourth proportional to 670.90, 925.88 and 376.26 is: 519.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.90 : 925.88 = 376.26 : x
  2. Step 2: Convert to fraction form
    670.90/925.88 = 376.26/x
  3. Step 3: Cross multiply
    670.90x = 925.88 × 376.26
  4. Step 4: Simplify right side
    670.90x = 348,371.61
  5. Step 5: Solve for x
    x = 348,371.61/670.90
  6. Step 6: Final answer
    x = 519.26

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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.