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Finding the Fourth Proportional to 767.77, 1,059.20 and 535.03

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Solution

The fourth proportional to 767.77, 1,059.20 and 535.03 is: 738.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    767.77 : 1,059.20 = 535.03 : x
  2. Step 2: Convert to fraction form
    767.77/1,059.20 = 535.03/x
  3. Step 3: Cross multiply
    767.77x = 1,059.20 × 535.03
  4. Step 4: Simplify right side
    767.77x = 566,703.78
  5. Step 5: Solve for x
    x = 566,703.78/767.77
  6. Step 6: Final answer
    x = 738.12

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Double scale
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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.