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Finding the Fourth Proportional to 670.79, 925.65 and 376.01

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Solution

The fourth proportional to 670.79, 925.65 and 376.01 is: 518.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    670.79 : 925.65 = 376.01 : x
  2. Step 2: Convert to fraction form
    670.79/925.65 = 376.01/x
  3. Step 3: Cross multiply
    670.79x = 925.65 × 376.01
  4. Step 4: Simplify right side
    670.79x = 348,053.66
  5. Step 5: Solve for x
    x = 348,053.66/670.79
  6. Step 6: Final answer
    x = 518.87

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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.