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Finding the Fourth Proportional to 609.99, 842.94 and 462.36

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Solution

The fourth proportional to 609.99, 842.94 and 462.36 is: 638.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.99 : 842.94 = 462.36 : x
  2. Step 2: Convert to fraction form
    609.99/842.94 = 462.36/x
  3. Step 3: Cross multiply
    609.99x = 842.94 × 462.36
  4. Step 4: Simplify right side
    609.99x = 389,741.74
  5. Step 5: Solve for x
    x = 389,741.74/609.99
  6. Step 6: Final answer
    x = 638.93

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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.