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Finding the Fourth Proportional to 1,196.70, 1,650.02 and 1,030.63

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Solution

The fourth proportional to 1,196.70, 1,650.02 and 1,030.63 is: 1,421.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,196.70 : 1,650.02 = 1,030.63 : x
  2. Step 2: Convert to fraction form
    1,196.70/1,650.02 = 1,030.63/x
  3. Step 3: Cross multiply
    1,196.70x = 1,650.02 × 1,030.63
  4. Step 4: Simplify right side
    1,196.70x = 1,700,560.11
  5. Step 5: Solve for x
    x = 1,700,560.11/1,196.70
  6. Step 6: Final answer
    x = 1,421.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.