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Finding the Fourth Proportional to 452.69, 624.67 and 256.21

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Solution

The fourth proportional to 452.69, 624.67 and 256.21 is: 353.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.69 : 624.67 = 256.21 : x
  2. Step 2: Convert to fraction form
    452.69/624.67 = 256.21/x
  3. Step 3: Cross multiply
    452.69x = 624.67 × 256.21
  4. Step 4: Simplify right side
    452.69x = 160,046.70
  5. Step 5: Solve for x
    x = 160,046.70/452.69
  6. Step 6: Final answer
    x = 353.55

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.