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Finding the Fourth Proportional to 914.42, 1,260.69 and 651.98

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Solution

The fourth proportional to 914.42, 1,260.69 and 651.98 is: 898.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    914.42 : 1,260.69 = 651.98 : x
  2. Step 2: Convert to fraction form
    914.42/1,260.69 = 651.98/x
  3. Step 3: Cross multiply
    914.42x = 1,260.69 × 651.98
  4. Step 4: Simplify right side
    914.42x = 821,944.67
  5. Step 5: Solve for x
    x = 821,944.67/914.42
  6. Step 6: Final answer
    x = 898.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.