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Finding the Fourth Proportional to 767.57, 1,059.30 and 472.68

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Solution

The fourth proportional to 767.57, 1,059.30 and 472.68 is: 652.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    767.57 : 1,059.30 = 472.68 : x
  2. Step 2: Convert to fraction form
    767.57/1,059.30 = 472.68/x
  3. Step 3: Cross multiply
    767.57x = 1,059.30 × 472.68
  4. Step 4: Simplify right side
    767.57x = 500,709.92
  5. Step 5: Solve for x
    x = 500,709.92/767.57
  6. Step 6: Final answer
    x = 652.34

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1.5x scale

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.