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Finding the Fourth Proportional to 1,095.16, 1,642.86 and 446.34

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Solution

The fourth proportional to 1,095.16, 1,642.86 and 446.34 is: 669.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,095.16 : 1,642.86 = 446.34 : x
  2. Step 2: Convert to fraction form
    1,095.16/1,642.86 = 446.34/x
  3. Step 3: Cross multiply
    1,095.16x = 1,642.86 × 446.34
  4. Step 4: Simplify right side
    1,095.16x = 733,274.13
  5. Step 5: Solve for x
    x = 733,274.13/1,095.16
  6. Step 6: Final answer
    x = 669.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.