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Finding the Fourth Proportional to 833.10, 1,249.65 and 444.30

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Solution

The fourth proportional to 833.10, 1,249.65 and 444.30 is: 666.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    833.10 : 1,249.65 = 444.30 : x
  2. Step 2: Convert to fraction form
    833.10/1,249.65 = 444.30/x
  3. Step 3: Cross multiply
    833.10x = 1,249.65 × 444.30
  4. Step 4: Simplify right side
    833.10x = 555,219.50
  5. Step 5: Solve for x
    x = 555,219.50/833.10
  6. Step 6: Final answer
    x = 666.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.