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Finding the Fourth Proportional to 622.86, 859.50 and 374.19

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Solution

The fourth proportional to 622.86, 859.50 and 374.19 is: 516.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.86 : 859.50 = 374.19 : x
  2. Step 2: Convert to fraction form
    622.86/859.50 = 374.19/x
  3. Step 3: Cross multiply
    622.86x = 859.50 × 374.19
  4. Step 4: Simplify right side
    622.86x = 321,616.31
  5. Step 5: Solve for x
    x = 321,616.31/622.86
  6. Step 6: Final answer
    x = 516.35

Related Problems

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Double scale
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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.