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Finding the Fourth Proportional to 335.90, 503.70 and 153.35

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Solution

The fourth proportional to 335.90, 503.70 and 153.35 is: 229.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.90 : 503.70 = 153.35 : x
  2. Step 2: Convert to fraction form
    335.90/503.70 = 153.35/x
  3. Step 3: Cross multiply
    335.90x = 503.70 × 153.35
  4. Step 4: Simplify right side
    335.90x = 77,242.40
  5. Step 5: Solve for x
    x = 77,242.40/335.90
  6. Step 6: Final answer
    x = 229.96

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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.