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Finding the Fourth Proportional to 1,149.24, 1,586.84 and 707.32

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Solution

The fourth proportional to 1,149.24, 1,586.84 and 707.32 is: 976.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,149.24 : 1,586.84 = 707.32 : x
  2. Step 2: Convert to fraction form
    1,149.24/1,586.84 = 707.32/x
  3. Step 3: Cross multiply
    1,149.24x = 1,586.84 × 707.32
  4. Step 4: Simplify right side
    1,149.24x = 1,122,403.67
  5. Step 5: Solve for x
    x = 1,122,403.67/1,149.24
  6. Step 6: Final answer
    x = 976.65

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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.