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Finding the Fourth Proportional to 335.89, 505.69 and 307.19

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Solution

The fourth proportional to 335.89, 505.69 and 307.19 is: 462.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    335.89 : 505.69 = 307.19 : x
  2. Step 2: Convert to fraction form
    335.89/505.69 = 307.19/x
  3. Step 3: Cross multiply
    335.89x = 505.69 × 307.19
  4. Step 4: Simplify right side
    335.89x = 155,341.15
  5. Step 5: Solve for x
    x = 155,341.15/335.89
  6. Step 6: Final answer
    x = 462.48

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.