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Finding the Fourth Proportional to 873.98, 1,311.36 and 441.44

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Solution

The fourth proportional to 873.98, 1,311.36 and 441.44 is: 662.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    873.98 : 1,311.36 = 441.44 : x
  2. Step 2: Convert to fraction form
    873.98/1,311.36 = 441.44/x
  3. Step 3: Cross multiply
    873.98x = 1,311.36 × 441.44
  4. Step 4: Simplify right side
    873.98x = 578,886.76
  5. Step 5: Solve for x
    x = 578,886.76/873.98
  6. Step 6: Final answer
    x = 662.36

Related Problems

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Half scale
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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.