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Finding the Fourth Proportional to 817.46, 1,126.33 and 555.02

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Solution

The fourth proportional to 817.46, 1,126.33 and 555.02 is: 764.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    817.46 : 1,126.33 = 555.02 : x
  2. Step 2: Convert to fraction form
    817.46/1,126.33 = 555.02/x
  3. Step 3: Cross multiply
    817.46x = 1,126.33 × 555.02
  4. Step 4: Simplify right side
    817.46x = 625,128.66
  5. Step 5: Solve for x
    x = 625,128.66/817.46
  6. Step 6: Final answer
    x = 764.73

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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.