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Finding the Fourth Proportional to 1,148.64, 1,584.99 and 651.19

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Solution

The fourth proportional to 1,148.64, 1,584.99 and 651.19 is: 898.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,148.64 : 1,584.99 = 651.19 : x
  2. Step 2: Convert to fraction form
    1,148.64/1,584.99 = 651.19/x
  3. Step 3: Cross multiply
    1,148.64x = 1,584.99 × 651.19
  4. Step 4: Simplify right side
    1,148.64x = 1,032,125.68
  5. Step 5: Solve for x
    x = 1,032,125.68/1,148.64
  6. Step 6: Final answer
    x = 898.56

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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.