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Finding the Fourth Proportional to 402, 603.23 and 158.70

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Solution

The fourth proportional to 402, 603.23 and 158.70 is: 238.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    402 : 603.23 = 158.70 : x
  2. Step 2: Convert to fraction form
    402/603.23 = 158.70/x
  3. Step 3: Cross multiply
    402x = 603.23 × 158.70
  4. Step 4: Simplify right side
    402x = 95,728.79
  5. Step 5: Solve for x
    x = 95,728.79/402
  6. Step 6: Final answer
    x = 238.13

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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.