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Finding the Fourth Proportional to 353.67, 530.78 and 158.60

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Solution

The fourth proportional to 353.67, 530.78 and 158.60 is: 238.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.67 : 530.78 = 158.60 : x
  2. Step 2: Convert to fraction form
    353.67/530.78 = 158.60/x
  3. Step 3: Cross multiply
    353.67x = 530.78 × 158.60
  4. Step 4: Simplify right side
    353.67x = 84,178.26
  5. Step 5: Solve for x
    x = 84,178.26/353.67
  6. Step 6: Final answer
    x = 238.01

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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.