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Finding the Fourth Proportional to 624.94, 862.42 and 345.17

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Solution

The fourth proportional to 624.94, 862.42 and 345.17 is: 476.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.94 : 862.42 = 345.17 : x
  2. Step 2: Convert to fraction form
    624.94/862.42 = 345.17/x
  3. Step 3: Cross multiply
    624.94x = 862.42 × 345.17
  4. Step 4: Simplify right side
    624.94x = 297,684.96
  5. Step 5: Solve for x
    x = 297,684.96/624.94
  6. Step 6: Final answer
    x = 476.34

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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.