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Finding the Fourth Proportional to 833.49, 1,250.44 and 285.53

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Solution

The fourth proportional to 833.49, 1,250.44 and 285.53 is: 428.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    833.49 : 1,250.44 = 285.53 : x
  2. Step 2: Convert to fraction form
    833.49/1,250.44 = 285.53/x
  3. Step 3: Cross multiply
    833.49x = 1,250.44 × 285.53
  4. Step 4: Simplify right side
    833.49x = 357,031.17
  5. Step 5: Solve for x
    x = 357,031.17/833.49
  6. Step 6: Final answer
    x = 428.36

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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.