Home / 1,307.40-1,961.48-441.76

Finding the Fourth Proportional to 1,307.40, 1,961.48 and 441.76

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Solution

The fourth proportional to 1,307.40, 1,961.48 and 441.76 is: 662.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,307.40 : 1,961.48 = 441.76 : x
  2. Step 2: Convert to fraction form
    1,307.40/1,961.48 = 441.76/x
  3. Step 3: Cross multiply
    1,307.40x = 1,961.48 × 441.76
  4. Step 4: Simplify right side
    1,307.40x = 866,503.40
  5. Step 5: Solve for x
    x = 866,503.40/1,307.40
  6. Step 6: Final answer
    x = 662.77

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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.