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Finding the Fourth Proportional to 696.18, 960.74 and 430.66

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Solution

The fourth proportional to 696.18, 960.74 and 430.66 is: 594.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    696.18 : 960.74 = 430.66 : x
  2. Step 2: Convert to fraction form
    696.18/960.74 = 430.66/x
  3. Step 3: Cross multiply
    696.18x = 960.74 × 430.66
  4. Step 4: Simplify right side
    696.18x = 413,749.04
  5. Step 5: Solve for x
    x = 413,749.04/696.18
  6. Step 6: Final answer
    x = 594.31

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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.