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Finding the Fourth Proportional to 445.23, 614.39 and 248.76

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Solution

The fourth proportional to 445.23, 614.39 and 248.76 is: 343.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.23 : 614.39 = 248.76 : x
  2. Step 2: Convert to fraction form
    445.23/614.39 = 248.76/x
  3. Step 3: Cross multiply
    445.23x = 614.39 × 248.76
  4. Step 4: Simplify right side
    445.23x = 152,834.41
  5. Step 5: Solve for x
    x = 152,834.41/445.23
  6. Step 6: Final answer
    x = 343.27

Related Problems

Find fourth proportional to 222.62, 307.19 and 124.38
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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.