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Finding the Fourth Proportional to 1,156.79, 1,596.42 and 659.51

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Solution

The fourth proportional to 1,156.79, 1,596.42 and 659.51 is: 910.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,156.79 : 1,596.42 = 659.51 : x
  2. Step 2: Convert to fraction form
    1,156.79/1,596.42 = 659.51/x
  3. Step 3: Cross multiply
    1,156.79x = 1,596.42 × 659.51
  4. Step 4: Simplify right side
    1,156.79x = 1,052,858.95
  5. Step 5: Solve for x
    x = 1,052,858.95/1,156.79
  6. Step 6: Final answer
    x = 910.15

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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.