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Finding the Fourth Proportional to 679.63, 937.80 and 430.51

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Solution

The fourth proportional to 679.63, 937.80 and 430.51 is: 594.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    679.63 : 937.80 = 430.51 : x
  2. Step 2: Convert to fraction form
    679.63/937.80 = 430.51/x
  3. Step 3: Cross multiply
    679.63x = 937.80 × 430.51
  4. Step 4: Simplify right side
    679.63x = 403,732.28
  5. Step 5: Solve for x
    x = 403,732.28/679.63
  6. Step 6: Final answer
    x = 594.05

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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.