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Finding the Fourth Proportional to 411.19, 567.53 and 256.03

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Solution

The fourth proportional to 411.19, 567.53 and 256.03 is: 353.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    411.19 : 567.53 = 256.03 : x
  2. Step 2: Convert to fraction form
    411.19/567.53 = 256.03/x
  3. Step 3: Cross multiply
    411.19x = 567.53 × 256.03
  4. Step 4: Simplify right side
    411.19x = 145,302.97
  5. Step 5: Solve for x
    x = 145,302.97/411.19
  6. Step 6: Final answer
    x = 353.37

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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.