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Finding the Fourth Proportional to 899.57, 1,348.21 and 437.49

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Solution

The fourth proportional to 899.57, 1,348.21 and 437.49 is: 655.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    899.57 : 1,348.21 = 437.49 : x
  2. Step 2: Convert to fraction form
    899.57/1,348.21 = 437.49/x
  3. Step 3: Cross multiply
    899.57x = 1,348.21 × 437.49
  4. Step 4: Simplify right side
    899.57x = 589,821.62
  5. Step 5: Solve for x
    x = 589,821.62/899.57
  6. Step 6: Final answer
    x = 655.67

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Double scale
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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.