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Finding the Fourth Proportional to 1,307.33, 1,960.83 and 474.30

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Solution

The fourth proportional to 1,307.33, 1,960.83 and 474.30 is: 711.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,307.33 : 1,960.83 = 474.30 : x
  2. Step 2: Convert to fraction form
    1,307.33/1,960.83 = 474.30/x
  3. Step 3: Cross multiply
    1,307.33x = 1,960.83 × 474.30
  4. Step 4: Simplify right side
    1,307.33x = 930,021.67
  5. Step 5: Solve for x
    x = 930,021.67/1,307.33
  6. Step 6: Final answer
    x = 711.39

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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.