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Finding the Fourth Proportional to 976.67, 1,459.72 and 898.83

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Solution

The fourth proportional to 976.67, 1,459.72 and 898.83 is: 1,343.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    976.67 : 1,459.72 = 898.83 : x
  2. Step 2: Convert to fraction form
    976.67/1,459.72 = 898.83/x
  3. Step 3: Cross multiply
    976.67x = 1,459.72 × 898.83
  4. Step 4: Simplify right side
    976.67x = 1,312,037.88
  5. Step 5: Solve for x
    x = 1,312,037.88/976.67
  6. Step 6: Final answer
    x = 1,343.39

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.