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Finding the Fourth Proportional to 622.54, 859.10 and 342.77

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Solution

The fourth proportional to 622.54, 859.10 and 342.77 is: 473.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.54 : 859.10 = 342.77 : x
  2. Step 2: Convert to fraction form
    622.54/859.10 = 342.77/x
  3. Step 3: Cross multiply
    622.54x = 859.10 × 342.77
  4. Step 4: Simplify right side
    622.54x = 294,467.70
  5. Step 5: Solve for x
    x = 294,467.70/622.54
  6. Step 6: Final answer
    x = 473.01

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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.