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Finding the Fourth Proportional to 1,150.79, 1,587.99 and 653.39

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Solution

The fourth proportional to 1,150.79, 1,587.99 and 653.39 is: 901.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,150.79 : 1,587.99 = 653.39 : x
  2. Step 2: Convert to fraction form
    1,150.79/1,587.99 = 653.39/x
  3. Step 3: Cross multiply
    1,150.79x = 1,587.99 × 653.39
  4. Step 4: Simplify right side
    1,150.79x = 1,037,568.85
  5. Step 5: Solve for x
    x = 1,037,568.85/1,150.79
  6. Step 6: Final answer
    x = 901.61

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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.