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Finding the Fourth Proportional to 899.74, 1,349 and 283.24

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Solution

The fourth proportional to 899.74, 1,349 and 283.24 is: 424.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    899.74 : 1,349 = 283.24 : x
  2. Step 2: Convert to fraction form
    899.74/1,349 = 283.24/x
  3. Step 3: Cross multiply
    899.74x = 1,349 × 283.24
  4. Step 4: Simplify right side
    899.74x = 382,090.76
  5. Step 5: Solve for x
    x = 382,090.76/899.74
  6. Step 6: Final answer
    x = 424.67

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Half scale
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Double scale
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Similar ratio
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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.