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Finding the Fourth Proportional to 496.91, 684.87 and 430.40

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Solution

The fourth proportional to 496.91, 684.87 and 430.40 is: 593.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    496.91 : 684.87 = 430.40 : x
  2. Step 2: Convert to fraction form
    496.91/684.87 = 430.40/x
  3. Step 3: Cross multiply
    496.91x = 684.87 × 430.40
  4. Step 4: Simplify right side
    496.91x = 294,764.62
  5. Step 5: Solve for x
    x = 294,764.62/496.91
  6. Step 6: Final answer
    x = 593.20

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1.5x scale

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.