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Finding the Fourth Proportional to 1,307.62, 1,961.48 and 333.72

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Solution

The fourth proportional to 1,307.62, 1,961.48 and 333.72 is: 500.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,307.62 : 1,961.48 = 333.72 : x
  2. Step 2: Convert to fraction form
    1,307.62/1,961.48 = 333.72/x
  3. Step 3: Cross multiply
    1,307.62x = 1,961.48 × 333.72
  4. Step 4: Simplify right side
    1,307.62x = 654,585.11
  5. Step 5: Solve for x
    x = 654,585.11/1,307.62
  6. Step 6: Final answer
    x = 500.59

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1.5x scale

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.