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Finding the Fourth Proportional to 1,301.67, 1,951.29 and 435.38

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Solution

The fourth proportional to 1,301.67, 1,951.29 and 435.38 is: 652.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,301.67 : 1,951.29 = 435.38 : x
  2. Step 2: Convert to fraction form
    1,301.67/1,951.29 = 435.38/x
  3. Step 3: Cross multiply
    1,301.67x = 1,951.29 × 435.38
  4. Step 4: Simplify right side
    1,301.67x = 849,542.88
  5. Step 5: Solve for x
    x = 849,542.88/1,301.67
  6. Step 6: Final answer
    x = 652.66

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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.