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Finding the Fourth Proportional to 1,307.81, 1,961.57 and 333.92

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Solution

The fourth proportional to 1,307.81, 1,961.57 and 333.92 is: 500.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,307.81 : 1,961.57 = 333.92 : x
  2. Step 2: Convert to fraction form
    1,307.81/1,961.57 = 333.92/x
  3. Step 3: Cross multiply
    1,307.81x = 1,961.57 × 333.92
  4. Step 4: Simplify right side
    1,307.81x = 655,011.31
  5. Step 5: Solve for x
    x = 655,011.31/1,307.81
  6. Step 6: Final answer
    x = 500.84

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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.