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Finding the Fourth Proportional to 899.58, 1,349.12 and 322.46

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Solution

The fourth proportional to 899.58, 1,349.12 and 322.46 is: 483.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    899.58 : 1,349.12 = 322.46 : x
  2. Step 2: Convert to fraction form
    899.58/1,349.12 = 322.46/x
  3. Step 3: Cross multiply
    899.58x = 1,349.12 × 322.46
  4. Step 4: Simplify right side
    899.58x = 435,037.24
  5. Step 5: Solve for x
    x = 435,037.24/899.58
  6. Step 6: Final answer
    x = 483.60

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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.