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Finding the Fourth Proportional to 899.75, 1,349.64 and 283.47

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Solution

The fourth proportional to 899.75, 1,349.64 and 283.47 is: 425.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    899.75 : 1,349.64 = 283.47 : x
  2. Step 2: Convert to fraction form
    899.75/1,349.64 = 283.47/x
  3. Step 3: Cross multiply
    899.75x = 1,349.64 × 283.47
  4. Step 4: Simplify right side
    899.75x = 382,581.03
  5. Step 5: Solve for x
    x = 382,581.03/899.75
  6. Step 6: Final answer
    x = 425.21

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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.