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Finding the Fourth Proportional to 679.81, 937.15 and 502.51

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Solution

The fourth proportional to 679.81, 937.15 and 502.51 is: 692.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    679.81 : 937.15 = 502.51 : x
  2. Step 2: Convert to fraction form
    679.81/937.15 = 502.51/x
  3. Step 3: Cross multiply
    679.81x = 937.15 × 502.51
  4. Step 4: Simplify right side
    679.81x = 470,927.25
  5. Step 5: Solve for x
    x = 470,927.25/679.81
  6. Step 6: Final answer
    x = 692.73

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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.