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Finding the Fourth Proportional to 679.45, 937.51 and 469.29

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Solution

The fourth proportional to 679.45, 937.51 and 469.29 is: 647.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    679.45 : 937.51 = 469.29 : x
  2. Step 2: Convert to fraction form
    679.45/937.51 = 469.29/x
  3. Step 3: Cross multiply
    679.45x = 937.51 × 469.29
  4. Step 4: Simplify right side
    679.45x = 439,965.42
  5. Step 5: Solve for x
    x = 439,965.42/679.45
  6. Step 6: Final answer
    x = 647.53

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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.