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Finding the Fourth Proportional to 833.28, 1,150.05 and 483.90

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Solution

The fourth proportional to 833.28, 1,150.05 and 483.90 is: 667.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    833.28 : 1,150.05 = 483.90 : x
  2. Step 2: Convert to fraction form
    833.28/1,150.05 = 483.90/x
  3. Step 3: Cross multiply
    833.28x = 1,150.05 × 483.90
  4. Step 4: Simplify right side
    833.28x = 556,509.20
  5. Step 5: Solve for x
    x = 556,509.20/833.28
  6. Step 6: Final answer
    x = 667.85

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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.