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Finding the Fourth Proportional to 624.97, 936.55 and 316.63

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Solution

The fourth proportional to 624.97, 936.55 and 316.63 is: 474.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    624.97 : 936.55 = 316.63 : x
  2. Step 2: Convert to fraction form
    624.97/936.55 = 316.63/x
  3. Step 3: Cross multiply
    624.97x = 936.55 × 316.63
  4. Step 4: Simplify right side
    624.97x = 296,539.83
  5. Step 5: Solve for x
    x = 296,539.83/624.97
  6. Step 6: Final answer
    x = 474.49

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.