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Finding the Fourth Proportional to 1,300.71, 1,951.09 and 435.03

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Solution

The fourth proportional to 1,300.71, 1,951.09 and 435.03 is: 652.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,300.71 : 1,951.09 = 435.03 : x
  2. Step 2: Convert to fraction form
    1,300.71/1,951.09 = 435.03/x
  3. Step 3: Cross multiply
    1,300.71x = 1,951.09 × 435.03
  4. Step 4: Simplify right side
    1,300.71x = 848,774.28
  5. Step 5: Solve for x
    x = 848,774.28/1,300.71
  6. Step 6: Final answer
    x = 652.55

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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.