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Finding the Fourth Proportional to 407.26, 562.02 and 220.76

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Solution

The fourth proportional to 407.26, 562.02 and 220.76 is: 304.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    407.26 : 562.02 = 220.76 : x
  2. Step 2: Convert to fraction form
    407.26/562.02 = 220.76/x
  3. Step 3: Cross multiply
    407.26x = 562.02 × 220.76
  4. Step 4: Simplify right side
    407.26x = 124,070.72
  5. Step 5: Solve for x
    x = 124,070.72/407.26
  6. Step 6: Final answer
    x = 304.64

Related Problems

Find fourth proportional to 203.63, 281.01 and 110.38
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Double scale
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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.