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Finding the Fourth Proportional to 730.16, 1,095.24 and 645.11

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Solution

The fourth proportional to 730.16, 1,095.24 and 645.11 is: 967.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.16 : 1,095.24 = 645.11 : x
  2. Step 2: Convert to fraction form
    730.16/1,095.24 = 645.11/x
  3. Step 3: Cross multiply
    730.16x = 1,095.24 × 645.11
  4. Step 4: Simplify right side
    730.16x = 706,550.28
  5. Step 5: Solve for x
    x = 706,550.28/730.16
  6. Step 6: Final answer
    x = 967.67

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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.