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Finding the Fourth Proportional to 767.45, 1,059.17 and 435.93

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Solution

The fourth proportional to 767.45, 1,059.17 and 435.93 is: 601.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    767.45 : 1,059.17 = 435.93 : x
  2. Step 2: Convert to fraction form
    767.45/1,059.17 = 435.93/x
  3. Step 3: Cross multiply
    767.45x = 1,059.17 × 435.93
  4. Step 4: Simplify right side
    767.45x = 461,725.77
  5. Step 5: Solve for x
    x = 461,725.77/767.45
  6. Step 6: Final answer
    x = 601.64

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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.